Katsura Rei - Tumblr Posts

Rei’s turn baby.

And by Rei’s turn, I mean, Rei and Hackmon.

but also Hajime

And Bootmon a bit too

It’s the Katsura’s turn

This ones kind of long

Backstory?

Of course the most notable thing about the Katsura brothers and their backstory is that they are orphans, and despite their young ages live alone. The second most notable thing is they are both computer geniuses. Really, this all just facilitates the plot more than anything, which leads to a lot of open ended questions about the brothers, but what we do have is interesting.

So it goes without saying that Rei and Hajime have presumably had a somewhat lonely childhood. Their mother died 2 years prior to the start of the show, and through the course of the show we never see them interact with anyone outside the Appmon friend group. There didn’t seem to be anyone else looking after them during the funeral, (if there was anyone there at all) and apparently no extended family members have been clued into the fact they are living alone, and the fact no one wanted (or could I suppose) take them both in, indicates they really weren’t close to this extended family to begin with. Then we get into their absent father. Rei claims that he doesn’t remember his father, which… he was about 6 when Hajime was born, which is old enough to remember. So either Rei does have memories, even if not clear of their father, or they have different fathers, or there’s some other family drama conspiracy going on. (I don’t speak Japanese and the two different subs I looked at are inconsistent with this, so maybe there is a clear explanation of their deal, it's just the translations are funky idk). Doesn’t really matter, the important bit is they don’t have a father in their life who matters.

Its an unconventional family structure from the get go, and a family structure, that again in my limited understanding of Japanese culture, is not exactly a very accepted one. I can see this being something that causes tension with their extended family, and potentially between the brother’s and their peers. 

We don’t know how exactly they lived their day to day lives, or how their family is officially noted in the hacked family registry, nor do we know what exactly they do about school. So, we don’t know anything about how they are perceived by others around them at all. Neither of them have been shown attending school. Rei is described as a 2nd/3rd year in Jr. High, but I find it incredibly doubtful that he attended school at all over the course of the series b/c of his obsession with finding Hajime. While it's not something that I can discount he did all together, I think it definitely makes sense if he didn’t actually go to school, at least not often enough to matter. And I’m sure he’s capable of hacking school records to keep authorities from taking note of that. School seems like a place where questions might have been asked about the boy’s living situation, especially when Hajime was younger and just entering elementary school. After all, Hajime wouldn’t have even been in 1st grade yet when their mom died.  Granted, we didn’t get a lot of school in general for any of the kids. But we did see Haru, Ai and Yuujin around school, and Astra at the beginning and in flashbacks, and Eri in school uniforms (though all prior to her idol career), as well as seeing everyone else interacting with their classmates in at least one scene. It’s still possible they are enrolled in a school, but are still isolated from their peers due to the circumstances in their family. Rei at the very least doesn’t have any friends prior to the series, and I have no reason to think Hajime does either. After all, the brothers are more alike than they appear on the surface. 

The show has, despite limited family appearances, has shown the similarities between the kids to their families, and so, despite not knowing anything about their mother otherwise, we can probably glean a lot about what type of person she was from who her sons are. We don’t know anything about their mother for sure other than she’s dead, and her sons seemed to mourn her death. While she still could have been a neglectful mother who Rei doesn’t have great memories of and thus doesn’t bring her up, again, the show didn’t go too in depth into families and so lack of info doesn’t mean lack of care on the characters' parts. People have parents, and her absence needs to be explained for Hajime and Rei’s backstory. But I think she has a little more importance on Hajime and Rei’s character beyond “dead”.

Because, speaking of the apartment, I’d like to draw attention to the décor in their apartment. Their apartment does not look like the type of place you’d expect to find two young boys living alone. While I feel like in many stories you’d expect the place the cool edgy orphan loner boy to have lived in to be sort of edgy. Either overly techy, or at least a bit modest, the Katsura apartment is neither. It’s decorated, well, like a middle aged woman decorated it. I don’t know how else to describe it. Neutral tones, plants, and a bit minimalist in the décor. It’s kept very clean by the boys and it overall looks like a very nice apartment.

Hajime’s room in the secret base is a little more like how you’d expect a bunch of kids to decorate a room with the way the wall is painted but it still has the plants though that the Katsura apartment has and blue I think is a good color to choose to make a room feel less claustrophobic. Which implies to me that this isn’t just a we’re putting a conscientious effort into dressing nicely to keep anyone from asking questions, and just how they are.

Their clothing also matches that aesthetic. Hajime is noted to be a polite little kid, and his polo shirts and sweater vest of his normal outfits match that impression. But despite Rei wearing a kind of garish outfit as his main outfit it doesn’t seem to be his normal style. In the flashback in episode 13, it’s kind of clear that Rei and Hajime usually dress similarly too. Rei wears a lot of button downs and nicer looking pants. They both wear t-shirts, jeans and sweats too, but even then their clothes are very neat. The two are overall tend to wear clothing that falls more on the semi-formal side of things. 

I’d assume it’s at least in part because it was the way their mother raised them. This implies to me that their mother was also a very “put-together” person. And probably where her son’s got their intelligence. And like I said, by assuming that their style of dress, their apartment, and their diligence in their work, stems from her. 

While I have no real evidence, I at least headcanon that she was a computer scientist as well which is where Rei gained his hacking ability. Either way, Rei had to have had this ability prior to her death, as he used it to hack the family registry, So Rei had to have this kind of skill as an elementary schooler. Which… this is an anime so I’m probably thinking too hard on this. While Hajime’s programming ability was almost certainly nurtured by Rei, whether directly or indirectly it’s unlikely Hajime, who was around 7ish at the time of his abduction, got his programming skills from just watching Rei. (Though, that doesn’t prove anything, it’s not very likely a 7 year old is the best hacker in the world). I just have assumed that Rei and Hajime both were surrounded by computer programming from a young age.

Speaking of Hajime being the hacker chosen by Leviathan, and Leviathan also being known to be manipulative of the situation to a degree that starts with having kept an eye on Haru since mid-elementary school, also means that its very likely that there is more to the Hajime abduction than meets the eye. The Katsura brothers were ideal targets in that there was no one else to miss them. On the other hand while Hajime was the first to solve the puzzle, we do not know exactly how many people the puzzle was sent to. Not to mention it’s very likely that other people with Hajime and Rei’s skill levels have more responsibilities than those two, and thus less time dedicated to deciphering random online puzzles (though, I know it is a popular past time). 

This, in addition to the fact that they were both able to maintain this way of living (idk how expensive apartments are, but not cheap and I know good computers aren’t cheap) implies few outside obligations (say, school), and a somewhat consistent source of income. Rei does straight up say he takes jobs. It’s not out of the question for Hajime to have helped him with these.

Either way, both the Katsura boys prior to the start of the series were hardworking, intelligent, independent, tidy boys who cared deeply for each other.

Rei and Hackmon

Rei is someone who bears an immense amount of responsibility, and has high expectations (mostly for himself) for someone so young. He’s responsible for looking after his younger brother, making money for the food, cooking the food, doing laundry, and generally just managing a household on top of a job. Which is a lot for a 12 year old. And Hajime helps, the flashback shows Hajime helping out with housework, but as a 6 year old at the time of his mothers death, there was probably a lot he couldn’t yet help with. But I think it also may be fair to say Rei was dismissive of the degree to which Hajime helped him.

I don’t even think Rei was completely unaware of the extent of Hajime’s genius, though this is based on… nothing but a feeling and one line that was 95% probably just Rei being evasive. But Rei almost certainly knew that Hajime was a bright kid. Though, if they weren’t hanging around with other people their age they may have a warped sense of what is unusual. But still Rei didn’t see Hajime as someone on his level. While we see Rei and Hajime living together happily, and we do see Hajime help out with chores, we also do see Rei neglect to give Hajime attention while Rei tries to figure out the puzzle, indicating that while, yes, the boys are doing well, they perhaps aren’t thriving. That a month went by between them solving the puzzle, and it wasn’t communicated about in all that time indicates that Rei was perhaps somewhat dismissive of Hajime’s thoughts, and that he didn’t see merit in sharing the puzzle with Hajime. 

Hajime’s competence as a programmer is unknown to the audience until Hajime is awakened in episode 43. Rei never considers that Hajime’s intelligence is part of the factor that got him kidnapped, and rather places all the blame and responsibility on himself for failing to protect Hajime (and well, Leviathan for abducting him in the first place). Hajime’s own abilities and shortcomings are a nonfactor to what Rei does. Hajime’s own choices are not initially made clear as to Rei they are somewhat irrelevant. I think it's evident that to Rei, while Hajime’s help was appreciated, Hajime was viewed as a responsibility rather than a help. 

Rei’s “I am alone” is not just one of only believing himself to have one person in his life, but also believing he only has himself to depend on. It’s not that he’s heartless or isn’t overall a nice person. We do after all mostly see him in the context of Hajime’s kidnapping, something he feels immense guilt for. Even if out of all our main protagonists he’s probably one of the highest on the “ends justify the means” scale, he is not above torture and invoke fear to get what he wants, but ultimately he’s shown to care for others. He might not be the most socially competent person (if his brief stint as a manager tells us anything), but it shows us that he is willing to help people out. He leaves Dantemon Chuu Chuu Jelly, as well as offers it to Eri’s coworkers. The last ED shows him making Macarons for Haru’s bday. But Rei’s arc is about learning to trust in others to help him, not that others are worthy of care.

I mean, it's obvious, he avoids working with the others to a point beyond simple practicality. He doesn’t trust people. He doesn’t trust Hajime to look out for himself. He doesn’t trust Hackmon to help him find his brother. He doesn’t even initially trust Haru’s group to fight Leviathan. Even in the last episode he doesn’t have 100% trust in Haru, doesn’t trust Haru to save the world over Yuujin (who he also didn’t trust). Rei’s journey to learning to trust isn’t over yet. But it’s getting there, step by step. It was slow going, Rei not properly joining the group until the final quarter. Like all of the characters, Rei had begun this journey prior to the series start when Rei trusts Hackmon. He gets further when he’s first properly introduced to the story and the others, and he trusts Haru’s group to find the Seven Code Appmon. culminating of course when he asks Eri for help to rescue Hajime, coming full circle when he and Hajime work together to write the programs that help them get Bootmon back.

That said, Rei’s seeming lack of trust in Haru in the final episode may be in part Rei projecting onto Haru. Rei warned Haru of Yuujin for what were, in all fairness, valid concerns. (But Rei didn’t do anything else, more or less trusting Haru to handle it). Haru assured him by relating Yuujin and himself to Rei and Hajime. Haru went off into a depressive state after finding out Yuujin’s true nature, not unlike Rei’s obsessiveness after Hajime’s disappearance. But that’s where Haru and Rei differ. Haru is able to pick himself up and move on in life. Understand what’s for the greater good, and that he can help Yuujin without sacrificing everyone else. He can put value on knowing that Yuujin wouldn’t want that, that Yuujin is an independent person beyond Haru’s care for him. Rei on the other hand quite likely would have hesitated more if it came down to Hajime vs. the world. While post series Rei with his wider social circle and acceptance of others (especially Hajime’s) help will ultimately lead him to becoming happier.

And that’s why Hajime learning to cook is important for Rei.

The recurring motif of food with Rei beyond that is twofold, him making eggs for his brother, turning into subsisting on Chuu Chuu Jelly’s showing how much Rei is neglecting himself in his search for Hajime. But food is also how Rei shows his care. While it’s obvious Rei cares for Hackmon just as much as the others, Rei’s support on the surface doesn’t extend beyond a bit of praise, and making Chuu Chuu. And when asked to find something for the idols, he brings in the Chuu Chuu. But the Chuu Chuu is really just Rei making do with the best he can. Rei making Macarons for Haru’s birthday, like previously said, the iconic egg dishes for his brother, and of course the Crème Brule, show Rei putting in more effort to show his affection. (A recurring theme it seems with many Appmon characters). So with Hajime learning to cook, its Rei accepting the affections and help from other that he usually gives. Hajime is taking on some more of Rei’s “responsibilities” and Rei is letting him. Them taking things on together in the future, a stark improvement of them solving the puzzle separately, and ending up alone.

While of course the smell of eggs, burnt, imperfect eggs, something that Leviathan failed to account for, a reminder of days when Rei was not as reliable a caretaker as he was later waking Hajime up is poetic all on its own. Rei’s imperfections and mess ups being just as important as his dramatic abilities and successes, Rei getting Hajime back by not only having to ask for help, but also giving his help, even for something as seemingly trivial (compared to the evil AI shenanigans) as a stage performance. It’s his “immaturity” that lets him find Hajime among the Sleepmon. Hajime is returned to Rei when Rei accepts that he’s not completely independent. When he’s not 100% driven by harsh desperation for Hajime’s return. When he grows past the belief that being cold and tough is the best thing to help Hajime. When he (almost) accepts that he at least rescued Hajime from Leviathan, even if he’s not able to return him to his old self. When he accepts his “flaws”.

Prior to the start of the series Rei seems to have been very well put together and organized. In other words. Not edgy. He still used “Ore” prior to Hajime’s abduction, but that’s not unusual or anything just that while he does give off a far more polite vibe to me prior to Hajime’s abduction, he was still a hacker and still assertive and a bit prideful. But when we first meet Rei, he’s wearing a black hoodie with zippered leggings. Edgy, indicative of the persona Rei wants to give off. But perhaps not indicative of the person Rei truly is. After Hajime’s return of course, he wears a more casual ensemble than before it all began, but it has lost its edginess. Not to be too cliché or anything, but it's a good symbolism for how Hajime’s abduction changed him but even after Hajime returns Rei has changed. 

Hackmon, like Rei is very goal oriented and plays things close. However, Hackmon is less single minded than Rei, and is less abrasive to the other Appmon than Rei is to the drivers. I think a notable moment is when Hackmon goes to accept some Gatch Monaka from Gatchmon, but Rei calls them away. Hackmon tends to act a bit as Rei’s voice of reason. Hackmon is constantly asking Rei questions, making him think through what he’s doing and why. In their image song, Hackmon notably doesn't really sing. He basically is there to dial back Rei’s edginess. Reminding him he’s not alone and that he needs to calm down sometimes and live in the moment. To not let hate fuel him. And in the end, Hackmon tells Rei to eat an actual meal. Unlike most of the Buddies, Hackmon isn’t really child-coded and Hackmon acts more as Rei’s caretaker than the other way around. Supporting and somewhat mom-friending the boy who's taken on so much responsibility for others sake. Obviously, Hackmon doesn’t really fight with the things Rei decided, with a staunch loyalty reminiscent of Adventure’s partnerships, not unlike Rei’s unflinching loyalty to Hajime. I always liked the moment where Hackmon asks “Well, am I a devil” and Rei snarkily remarks he’s not an angel. While both of them appear edgy on the surface, and neither are above a bit of force to get what they’d like, both are ultimately driven by their desire to protect.

Rei and Hackmon are characters who, despite their aloof airs, they are primarily motivated by looking after others. Even if Rei is not initially very good about accepting help from others, and Hackmon initially seems to be in the deal for strength. Rei is a kid with too much responsibility, but by the end of the series, is starting to allow himself to be a kid again.

Hajime and Onmon

Okay, so Bootmon isn’t technically Hajime’s Buddy. And we never see Onmon (at least not in the anime). But they do fulfil this sort of role. And… of course this is going to rehash some of Rei’s stuff but bear with me. This will probably be the shortest because ultimately Hajime’s role is just an extension of Rei’s… but I believe he deserves his own section.

Hajime is a child computer science genius who has been primarily raised by his older brother since he was about 5 or 6. He is polite and rather mature and clever for his age. Rei describes Hajime as his “only family” and while we don’t know too much about their prior circumstances, it’s likely that there really weren't a lot of people in Hajime’s life to begin with. And anyone who may have been involved in their life prior was probably pushed out to avoid raising any suspicions. Hajime has had very little adult support, which is probably why he is incredibly independent, Rei himself only being a young teen. So while he is incredibly close to his brother, and is likely rather dependent on Rei for both emotional and physical needs (particularly prior to the series) its not to the extent we may have assumed from the first time we met Rei.

So Hajime is an incredibly mature child who likely had to grow up way too fast and become rather independent from a young age. While Rei prefers to think of himself as someone who takes care of Hajime, Rei ultimately could not take care of everything, on his own, and as seen when Rei dismisses Hajime’s desire to go out to complete the puzzle, Hajime must have spent a lot of time by himself, both playing by himself, and probably learning by himself, meaning Hajime is actually way more self sufficient than the initial reveal of his existence might have you believe. Way more self-sufficient than Rei seems to know (or at least acknowledge).

This isn’t to say that Rei’s assessment of Hajime of a scared innocent little boy is completely wrong. There isn’t anything to suggest that all of the video Rei found of Hajime was fake. Hajime really did cry and call out to his brother, scared because he didn’t know what was happening. Hajime really did ask when his mother was coming back at her grave, despite probably being old enough to know better. Hajime really is a kid. And he really is dependent primarily on Rei. Hajime had to have grown up while kidnapped by Leviathan of course. Being enslaved and then “operated” on by Biomon and put in a coma is… probably going to result in some sort of trauma character development. But even so, throughout his ordeal, Hajime shows a courage and self sufficiency that isn’t solely from his abduction.

Bootmon is an Appmon Hajime made himself. But Bootmon is also incredibly childish. While it is in part because Bootmon is a young appmon, there’s probably a narrative parallel to Hajime. Though the Appmon are in general rather childish, Bootmon seems particularly young compared to the others (well, Offmon maybe). We see old apps, and we see apps “die” and Appmon go to school. But Bootmon is portrayed as innocent and easily frightened, not unlike how Hajime initially appeared to be. 

Hajime, despite his young age, has fallen into the caretaker role to Bootmon more so than any of the other relationships between Buddies. Their relationship may parallel Rei and Hajime’s, particularly in those early days when Hajime was still a bit naïve. We see a lot of Rei taking care of Hajime, yes, such as cooking, but we also see Hajime taking his share of chores. Both Bootmon and Hajime, despite their young ages, play a key role in Leviathan’s plan, both dealing with facing against Leviathan alone, leaving them both in vulnerable situations, left with responsibilities beyond their youth. For Hajime it’s being kidnapped, held hostage while being forced to work on a project and being operated on against his will and put into a coma. For Bootmon it’s being left to hide alone in a world he’s unfamiliar with. Bootmon and Hajime both are very loyal to their guardian Hajime and Rei respectively, and have a lot of trust in them.

Hajime is just a kid, albeit an incredibly capable one, in a world out to get him with the world on his shoulders. But fortunately an older brother (and now friends) to carry it with.

The Katsura brothers were just both incredibly capable kids, though ultimately still just kids who had no one to turn to but each other. But even if they had each other, that wasn’t enough, Rei grew overly self-sufficient to the point of not recognizing Hajime’s abilities. But at the end of the series they now have a more extensive support system, as well as being better able to rely on each other. Rei no longer going it alone.