Haganezuka - Tumblr Posts

i hate that having a bright red sword is a different thing from having a red sword, so here's the better solution

I honestly don't know how to end this, there's a lot of holes in it like how you're in the swordsmith village and everything...so I am just going to let it be an open ending, one where you guys can make your own assumptions. (Masterlist)

Did Kotetsu survive? Maybe :)

Anyway, thank you for enjoying this small series! It wasn't actually supposed to have these many parts and the ending here is too 'blerhhh' for me. Maybe I'll post bonus parts or some scenes of your marriage life with Haganezuka 👀✨

Thank you for reading! ლ⁠(⁠◕⁠ω⁠◕⁠ლ⁠)

Sequel of this, so here's a second meal for Haganezuka fans. (Edited: part 3!) (Part 4)

(if anyone wants to make this a fanfic or something you can/watch me being motivated enough to write a fanfic with this (maybe not lol))

Masterlists

The last episode of Demon Slayer season 3 is just *chef kiss*

The soundtrack really contribute well in playing the emotional scenes! I love how Tanjirou's breathing gets fast to show how much he's panicking and can't come to a decision, and I love the soundtrack when Nezuko gets in contact with the sun because it really shows how scary the situation is for Tanjirou and Nezuko.

Damn and Tanjirou saying how the only reason he managed to get this far is because to turn Nezuko back into a human...ahh 🥹🥹 she really is his only sanity, his only reason to continue living.

Haganezuka is so funny 😭 he does not discriminate between ages because he would even throw hands with Kotetsu LMAOOO. He even smacks Muichiro 😂😭

Some of y'all begged me to make a third part of the Haganezuka x reader comic but have you ever think what if I make it angst next

(if you haven't read the first and second part comic yet)

Part 1

Part 2

Part 3 (guess who just decided to show mercy :) )

Part 4 (angst HAHAHAH)

Another part of Haganezuka and you! :D

Part 1, Part 2, Part 3 (here!), Part 4

Hmm you guys look too happy... :)

Masterlists

I am currently busy with university projects but don't worry, I'll make sure to draw the next comic part for Haganezuka and you (tw angst for real)

Btw, I have an idea with trope of Mall Security Guard x That Random Mall Musician to use with female reader and another Demon Slayer character (male casts) choices are;

- Kyogai

- Any of the Hantengu clones

- other cast (comments below)

p.s. hey wouldn't it be fun if reader was the security instead lol

Ah, finally. Angst. (⁠◠⁠‿⁠・⁠)⁠—⁠☆

Part 1, Part 2, Part 3, Part 4 (here!)

(I cannot ignore this pose I found on Pinterest for reference, it just looks so babygirl) (if anyone know the artist, tell me)

Taisho secret: Haganezuka looks around to find anyone who can craft jewelry, hairpins, the likes so he can learn how to do so.

Masterlists

-` 𝕄𝕒𝕤𝕥𝕖𝕣𝕝𝕚𝕤𝕥𝕤 ´-

[ 𝐗 𝐑𝐄𝐀𝐃𝐄𝐑 𝐋𝐈𝐒𝐓 ]

【 𝙃𝙖𝙜𝙖𝙣𝙚𝙯𝙪𝙠𝙖 𝙃𝙤𝙩𝙖𝙧𝙪 𝙭 𝙍𝙚𝙖𝙙𝙚𝙧 】

Part 1

Part 2

Part 3

Part 4

Part 5

Part 6 (Ending)

【 𝙑𝙞𝙣𝙨𝙢𝙤𝙠𝙚 𝙎𝙖𝙣𝙟𝙞 𝙭 𝙒𝙞𝙩𝙘𝙝 𝙍𝙚𝙖𝙙𝙚𝙧 】

Teaser

Part 1

Part 2

Part 3

Doodles

[ 𝐀𝐔 𝐋𝐈𝐒𝐓 ]

【 𝘿𝙚𝙢𝙤𝙣 𝙎𝙡𝙖𝙮𝙚𝙧 𝙈𝙚𝙧𝙢𝙖𝙞𝙙/𝙋𝙞𝙧𝙖𝙩𝙚𝙨 𝘼𝙐】

Kanae meets Sanemi and Shinobu is trying to grill Giyuu alive

Giyuu is saved yay

The Butterfly Pirates info

Lionfish based merman Kyojuro and Betta fish based Akaza (ft Inosuke)

Barmaid Mitsuri

Sea creatures they're based off

Sanemi stares at Kanae's poster

Yooo Giyushino crumbles 🤭

How Tanjirou and Kanao met + doodles

Injured Kanae

【 𝙐𝙣𝙝𝙞𝙣𝙜𝙚𝙙 𝙉𝙚𝙯𝙪𝙠𝙤 𝙨𝙚𝙧𝙞𝙚𝙨 】

The first

The second

The third

The fourth

The fifth

[ 𝐂𝐑𝐎𝐒𝐒𝐎𝐕𝐄𝐑 𝐋𝐈𝐒𝐓 ]

【 𝙂𝙧𝙚𝙚𝙣 𝙁𝙡𝙖𝙜𝙨 𝙎𝙝𝙚𝙣𝙖𝙣𝙞𝙜𝙖𝙣𝙨 】

Chibi Tanjirou, Luffy and Izuku

Tanjirou's forehead

Ft. Nezuko and her Blood Demon Art

One day at the park...

They have tragic siblings yeah

🍉

【𝙁𝙉𝘼𝙁 𝘽𝙐𝘿𝘿𝙔 𝙂𝙐𝘼𝙍𝘿】

"Bodyguard? More like Buddy-guard! "

Enter Rafael (Astra's second eldest brother)

Here's a AO3 fic

Sun and Moon (Sol and Mani) dragons

Part 5, let's go (⁠.⁠ ⁠❛⁠ ⁠ᴗ⁠ ⁠❛⁠.⁠) [Masterlist]

Is the meal satisfying enough?

I honestly don't know how to end this, there's a lot of holes in it like how you're in the swordsmith village and everything...so I am just going to let it be an open ending, one where you guys can make your own assumptions. (Masterlist)

Did Kotetsu survive? Maybe :)

Anyway, thank you for enjoying this small series! It wasn't actually supposed to have these many parts and the ending here is too 'blerhhh' for me. Maybe I'll post bonus parts or some scenes of your marriage life with Haganezuka 👀✨

Thank you for reading! ლ⁠(⁠◕⁠ω⁠◕⁠ლ⁠)

KNY Horror movie AU lists:

1. The Ethereal Cult

(Featuring Inosuke, Kanao, Shinobu, Kanae, Kotoha and Douma.)

Inosuke and Kanao venture into a small village in search for their friend Shinobu, only to find themselves deep in trouble with the local cult where the leader may or may not practice cannibalism.

2. Split

(Featuring Tanjirou, Nezuko, Genya, Mitsuri and Hantengu clones.)

During a school trip, a group of high schoolers and their teacher are forced to take cover from the storm in a small inn belonging to a man named Hantengu. As the storm drags on for days, so does their stay in the inn. Terrifying things begin to unfold when they discover that the man is a serial killer.

3. Unseen Scales

(Featuring Muichiro, Yuichiro, Kotetsu, Haganezuka and Gyokko.)

People keep disappearing and after his twin brother is amongst the missing ones, Muichiro is set to uncover the truth. The only clues or patterns he recognized from the cases are the fact that the victims often went missing near the river, always during the night market.

Taking Care of Haganezuka's Injuries - headcanons

Requested by: @zero-sugar-null

Being a swordsmith's wife is a little difficult, but being Haganezuka's s/o is a whole different story.

He not only gets angry easily but also gets hurt just as easily and of course you are the one to take care of him.

‌Any kind of bruises or cuts annoy him even more than anything else. 

Not because they hurt.... Because they interrupt his work!

"God dammit!" Loud, angry voice fill the forge as a not yet finished sword is thrown across the room. "It's not perfect. I will have to start from the beginning," Haganezuka mutters and suddenly stops at the uncomfortable feeling in his palms. After taking one look at his hands, he can tell what was wrong. He didn't even notice the cuts at first, but they indeed were there. 

So it was time to see you.

‌He is snappy when someone else is offering help.

True. Most smiths hate his guts but still he is one of them, so offering help is something normal, but Hotaru truly hates it!

"Hanganezuka? Maybe you need help?" Someone asks.

"NO! Leave me alone!” He growls in return.

Who the hell they think they are to suddenly offer him help?! Are they looking down on him? That's some kind of joke.

He doesn't need it... Not from them at least. After all he has you.

Any other attempt of helping him ends with an argument. In the end, other smiths stop even trying. 

You are the first and only person he comes to.

At this point, you are pretty used to your husband returning home with his hands hurt in one way or another. Yet it still somehow gets you off guard when in the middle of the day the door suddenly bursts open, and you see a big man in a weird mask while you simply try to enjoy your tea and a day off!

Him showing up isn’t unusual, but after years with him, you know what it means. You put away your nice, hot tea and get up to get the stuff.

‌He doesn't wince or whine. 

Hotaru is just watching you, maybe frowning once in a while, but you don’t really know because of the mask. He doesn't like how it feels when you take care of his injuries, the burning sensation isn’t his favorite, but your touch is great compensation for the moments of pain. 

It soothes the discomfort and immediately makes him feel much better.

Hotaru ALWAYS thanks you.

Each and every time you do this for him, no matter how many times and for how many years. It's a really simple, polite gesture, but it's important for him. 

He is fully aware he isn't the best pick for a husband, yet you picked him for some reason, so it would be only fair to show you how grateful he is.

"Thank you," he says after raising his mask to place a kiss on your forehead and then cheek. 

Hotaru often thanks God for the mask, because your sweet reaction makes even this angry man blush. 

‌Sometimes you scold him.

You understand his craft is important to him, but some days he takes it too far. Getting his hands all cut and bloody, you can't pat him on the head for that!

"How can you do this to yourself? Love, I admire your work and dedication, but you can't keep it up."

He scoffs at your words. "Someone has to make sure you slayers won't fight with bare hands."

"I know that and thank you for this but working so hard is stupid."

“HOW DARE YOU SAY THAT?!” Hotaru quickly gets defensive.

Scolding sometimes turns into heated arguments between the two of you... Ups...

LET'S REVERSE STUFF A LITTLE

You are a demon slayer, so you make sure the village as well as smiths in it are safe. What means: going against demons, what means: sometimes you get hurt.

‌ Information of you getting hurt is one of few things that pull him away from work.

Yes, he is always deep in his work, but the simple mention of you getting hurt makes him drop everything. He needs to know how bad it is? Are you alive? 

So he drops whatever he is doing (even if it means starting from the beginning again) and goes to see you.

‌If it's possible, he helps you himself. 

Haganezuka isn't a master of taking care of others. It's hard for him, but he watched you work so many times, so he follows exactly those patterns. 

He cleans your wounds and wraps them carefully, just like you do with him. 

Also get ready for a kiss on every wound you have, after all kisses make it all better, right?

‌If it's not possible, he entrusts you to a person who knows what to do.

But this process is full of yelling and threats. 

"You better take good care of her! Or I will deal with you myself! She is my wife, remember that!” 

Sometimes even other smiths must hold him in place for the safety of others.

‌He scolds you as well.

That's another thing you should get ready for. Hotaru is your worried husband, so he has a right to do so when his wife isn’t careful enough.

Right after sweet kisses, he will scold you for getting hurt.

"How could you be so stupid!,” He mutters, annoyed. "You should be more careful. You're a demon slayer, not some child with too sharp toy! Being careful should be your priority!"

"B-But..." You try to argue, but you are quickly cut off by him.

"NO BUTS, Y/N,” He snaps at you. "You need to remember about your own safety. Keep other slayers and villagers safe but remember about your own safety too!"

You just sit there and listen, nodding from time to time. It's obvious your husband is worried, and you won’t argue with that. It was understandable, you do the same when it comes to him.

--------------

In the end, you care about him deeply, and he cares about you even deeper. Each of you try to keep the other safe and provide help and/or comfort whenever it's needed. 

It's just a simple proof of how much you love each other, and neither of you is going to complain. 

Both of you love it so much, actually.

Being Married to Haganezuka - headcanons

Relationship between swordsmith and demon slayer was actually unheard of, but you didn't complain at all.

It was really comfortable, you lived with your husband and were close enough to be ready when needed.

Your husband was a difficult person: hot-blooded, extremely dedicated to his craft, and socially inept.

Many were sure he would never find a wife. That was until you came into the village, after all Hotaru was just a man and despite all of his heavy flaws managed to win your heart.

People hated him, and you knew that, but thankfully your presence brightened his image. Just a tiny bit. But still.

--------------

‌He doesn't just talk about work. He rants. 

A lot, actually. 

Thanks to it, you know all about his clients, even if he has very little of those.

"I need to make new swords! And guess for who! For a kid that barely made it through Finale Selection!" Hotaru complains as you hum in acknowledgement while braiding the long black locks of your husband. "I am sure he will be like the others! Not respecting my work whatsoever!"

It's a simple routine before bed. He rants, letting out some of the frustration while your attention calms him down. It's always enough to actually allow him to properly rest during the night. 

‌Sleeping with him is yet another completely different thing.

Once the two of you get into bed, there is no running away. When his arms wrap around you, it's over, you are stuck like this until the sun rises again. He is simply not letting you go. 

Hotaru will never admit it out loud, but that's exactly what he is afraid of, you were the only woman that ever wanted him, so what would he do without you around.

You are his biggest treasure, he is not letting you go. Ever.

‌ Mornings with Haganezuka are much nicer. 

He is calm and rested as you're helping him to get ready for work right after breakfast.

"I hate that mask," You say with a grimace, while looking at the ugly mask in your hand. 

Of course, you understand the whole idea of masks but it didn't change the fact you didn't like them, you preferred to see your husband without it.

He snatches the item from your hand and hands you a shawl. "You better help me with my hair," Hotaru mutters, sitting in front of you to make it easier. "You also should get ready."

With an eye roll, you started to wrap his hair, making sure they won't bother him during the work. "I am just as ready as you are," you sum up, tying the shawl as tightly as possible. 

Once you were done he got up, put on the mask and turned to you. "I love you," he admits, while his hands move to your collar to properly button it.

Looking up at him, "I... I love you too...," you say with a soft grimace, making him frown under the mask. "What's your problem now?”

"Sorry. It's hard to say with that thing on your face," you admit slowly.

"You're annoying," He scoffs and turns to leave.

After grabbing your sword, you could follow him, walking by his side and holding his hand until you reach your post. Only then the two of you finally part ways for the day.

‌Hotaru is the one taking care of your sword. 

How could he not!

Not only he's a swordsmith, but he is also your husband, so his duty to you is doubled or even tripled! Not to mention, the sword is his own creation.

"Did you clean it? Are you sure it's clean? Maybe you chipped it? Let me see!"

You need to keep him away, using your own hands to make sure he won't get to your sword. "Hotaru, love. I am sure of all of it," You sigh, but before you know it he already has his hands on it. 

How did he even do that?! 

With careful eyes, he checks the blade and handle to be fully sure you're telling the truth. 

He couldn't allow his beloved wife to walk around with a sword that isn't properly taken care of. Hotaru wanted to be sure you are safe. "It's getting blunt. I will sharpen it for you. You can take the other one."

And just like that, your husband is off to do his things. There is no stopping him nor making him postpone the work.

Speaking about work!

Hotaru is hard working and stubborn.

Once he gets to work... He. Is. Gone. 

The mix of passion and dedication in his case are actually a "deadly" combination. There is no way of pulling him away. Sadly, even as his own wife, you don't have this privilege.

Once, when you attempted to take the sword away to stop him, Hotaru snapped at you, his voice filled with frustration. "Don't you see I'm busy? This must be done, and I won't deliver a poorly made sword!"

After that, you never tried that again.

He can be gone for the whole day and night while forging a new blade. It's annoying when you cannot spend the evening snuggling with your husband. 

‌BUT you are actually useful when he loses his temper! 

"Y/N-sama!"  One of the young apprentices yells, getting your attention immediately. Kids here love you since you are much nicer than Hotaru, but one of them approaching you while on duty isn't something usual.

"What is it? Did something happen?" You ask, giving the boy a soft smile.

Boy nodded quickly. "It's Haganezuka! He lost it again."

Letting out an annoyed sigh, you nod and quickly follow the boy just to find your husband held by three swordsmiths, while he's thrashing around to get free while another swordsmith stood nearby.

"What happened here?!" You ask with a frown. 

Hotaru growls. "He interrupted my work! I was almost done with the sword! Now I will have to start all over again! I'll kill you!"

You blink and rub your face, no matter how many times it happened, you still couldn't get used to it. "Hotaru. That's enough, let's go home. I will make you mitarashi dangos."

He immediately stops his thrashing around and looks at you. Other swordsmiths look at each other confused and slowly let him go.

Instead of attacking the man that took the sword, he walks to you and hugs you tightly. "Let's go. I want mitarashi dangos."

Of course, it's not the only situation like this. Things like this often happen because of his temper. Sometimes you need to resort to tickling his sides, but this ends in you dragging him back home and him later scolding you for even doing this.

‌ Since he works hard. He gets hurt.

Hotaru hates this, but at the same time he loves it. No one likes to get hurt, and he as a swordsmith sometimes gets his hands a little damaged in his work fever.

It's annoying. Wounds even if shallow still hurt and disturb the work.

Thankfully, he has you and he can always count on your help. He will not admit it, but he loves the way your palms feel against his own when you wrap his injuries.

You are a slayer, yet your hands are small and soft compared to his. Not to mention, you are always so gentle and careful while taking care of you. No one else can take care of his injuries just like you do.

"There you go," you say sweetly, tying a knot on a fresh bandage on his hand. Before he can thank you, you press a soft kiss to the injury. "I told you to be careful and to work less, but you never listen. Is it really that hard to listen just a little bit? For once?”

No matter how many times he returned home with cuts or/and abrasions, you always helped him and then scolded him. Normally he would get angry at someone for talking to him like this, but when it comes to you; Hotaru can't be mad, he actually feels oddly happy you do this. 

--------------

In summary.

Hotaru is a good man. 

Others may hate him for his slightly angry nature, but that's because no one knows him like you do, not even a village chief.

He loves you in his own way and is forever grateful for you and the fact you love him back just as much.

Some people think you may regret marrying such a man, but you truly don't. He is the best thing that ever happened to you, and you wouldn't change him for anyone else.

Sequel of this, so here's a second meal for Haganezuka fans. (Edited: part 3!) (Part 4)

(if anyone wants to make this a fanfic or something you can/watch me being motivated enough to write a fanfic with this (maybe not lol))

Being Married to Haganezuka - headcanons

Relationship between swordsmith and demon slayer was actually unheard of, but you didn't complain at all.

It was really comfortable, you lived with your husband and were close enough to be ready when needed.

Your husband was a difficult person: hot-blooded, extremely dedicated to his craft, and socially inept.

Many were sure he would never find a wife. That was until you came into the village, after all Hotaru was just a man and despite all of his heavy flaws managed to win your heart.

People hated him, and you knew that, but thankfully your presence brightened his image. Just a tiny bit. But still.

--------------

‌He doesn't just talk about work. He rants. 

A lot, actually. 

Thanks to it, you know all about his clients, even if he has very little of those.

"I need to make new swords! And guess for who! For a kid that barely made it through Finale Selection!" Hotaru complains as you hum in acknowledgement while braiding the long black locks of your husband. "I am sure he will be like the others! Not respecting my work whatsoever!"

It's a simple routine before bed. He rants, letting out some of the frustration while your attention calms him down. It's always enough to actually allow him to properly rest during the night. 

‌Sleeping with him is yet another completely different thing.

Once the two of you get into bed, there is no running away. When his arms wrap around you, it's over, you are stuck like this until the sun rises again. He is simply not letting you go. 

Hotaru will never admit it out loud, but that's exactly what he is afraid of, you were the only woman that ever wanted him, so what would he do without you around.

You are his biggest treasure, he is not letting you go. Ever.

‌ Mornings with Haganezuka are much nicer. 

He is calm and rested as you're helping him to get ready for work right after breakfast.

"I hate that mask," You say with a grimace, while looking at the ugly mask in your hand. 

Of course, you understand the whole idea of masks but it didn't change the fact you didn't like them, you preferred to see your husband without it.

He snatches the item from your hand and hands you a shawl. "You better help me with my hair," Hotaru mutters, sitting in front of you to make it easier. "You also should get ready."

With an eye roll, you started to wrap his hair, making sure they won't bother him during the work. "I am just as ready as you are," you sum up, tying the shawl as tightly as possible. 

Once you were done he got up, put on the mask and turned to you. "I love you," he admits, while his hands move to your collar to properly button it.

Looking up at him, "I... I love you too...," you say with a soft grimace, making him frown under the mask. "What's your problem now?”

"Sorry. It's hard to say with that thing on your face," you admit slowly.

"You're annoying," He scoffs and turns to leave.

After grabbing your sword, you could follow him, walking by his side and holding his hand until you reach your post. Only then the two of you finally part ways for the day.

‌Hotaru is the one taking care of your sword. 

How could he not!

Not only he's a swordsmith, but he is also your husband, so his duty to you is doubled or even tripled! Not to mention, the sword is his own creation.

"Did you clean it? Are you sure it's clean? Maybe you chipped it? Let me see!"

You need to keep him away, using your own hands to make sure he won't get to your sword. "Hotaru, love. I am sure of all of it," You sigh, but before you know it he already has his hands on it. 

How did he even do that?! 

With careful eyes, he checks the blade and handle to be fully sure you're telling the truth. 

He couldn't allow his beloved wife to walk around with a sword that isn't properly taken care of. Hotaru wanted to be sure you are safe. "It's getting blunt. I will sharpen it for you. You can take the other one."

And just like that, your husband is off to do his things. There is no stopping him nor making him postpone the work.

Speaking about work!

Hotaru is hard working and stubborn.

Once he gets to work... He. Is. Gone. 

The mix of passion and dedication in his case are actually a "deadly" combination. There is no way of pulling him away. Sadly, even as his own wife, you don't have this privilege.

Once, when you attempted to take the sword away to stop him, Hotaru snapped at you, his voice filled with frustration. "Don't you see I'm busy? This must be done, and I won't deliver a poorly made sword!"

After that, you never tried that again.

He can be gone for the whole day and night while forging a new blade. It's annoying when you cannot spend the evening snuggling with your husband. 

‌BUT you are actually useful when he loses his temper! 

"Y/N-sama!"  One of the young apprentices yells, getting your attention immediately. Kids here love you since you are much nicer than Hotaru, but one of them approaching you while on duty isn't something usual.

"What is it? Did something happen?" You ask, giving the boy a soft smile.

Boy nodded quickly. "It's Haganezuka! He lost it again."

Letting out an annoyed sigh, you nod and quickly follow the boy just to find your husband held by three swordsmiths, while he's thrashing around to get free while another swordsmith stood nearby.

"What happened here?!" You ask with a frown. 

Hotaru growls. "He interrupted my work! I was almost done with the sword! Now I will have to start all over again! I'll kill you!"

You blink and rub your face, no matter how many times it happened, you still couldn't get used to it. "Hotaru. That's enough, let's go home. I will make you mitarashi dangos."

He immediately stops his thrashing around and looks at you. Other swordsmiths look at each other confused and slowly let him go.

Instead of attacking the man that took the sword, he walks to you and hugs you tightly. "Let's go. I want mitarashi dangos."

Of course, it's not the only situation like this. Things like this often happen because of his temper. Sometimes you need to resort to tickling his sides, but this ends in you dragging him back home and him later scolding you for even doing this.

‌ Since he works hard. He gets hurt.

Hotaru hates this, but at the same time he loves it. No one likes to get hurt, and he as a swordsmith sometimes gets his hands a little damaged in his work fever.

It's annoying. Wounds even if shallow still hurt and disturb the work.

Thankfully, he has you and he can always count on your help. He will not admit it, but he loves the way your palms feel against his own when you wrap his injuries.

You are a slayer, yet your hands are small and soft compared to his. Not to mention, you are always so gentle and careful while taking care of you. No one else can take care of his injuries just like you do.

"There you go," you say sweetly, tying a knot on a fresh bandage on his hand. Before he can thank you, you press a soft kiss to the injury. "I told you to be careful and to work less, but you never listen. Is it really that hard to listen just a little bit? For once?”

No matter how many times he returned home with cuts or/and abrasions, you always helped him and then scolded him. Normally he would get angry at someone for talking to him like this, but when it comes to you; Hotaru can't be mad, he actually feels oddly happy you do this. 

--------------

In summary.

Hotaru is a good man. 

Others may hate him for his slightly angry nature, but that's because no one knows him like you do, not even a village chief.

He loves you in his own way and is forever grateful for you and the fact you love him back just as much.

Some people think you may regret marrying such a man, but you truly don't. He is the best thing that ever happened to you, and you wouldn't change him for anyone else.

so yk how for final selection students use their mentors nichirin sword since they don’t have their own yet?

do you think urokodaki knows haganezuka so well because he keeps making him new swords after all his students die to that neck demon?