Sebastian: Crying Is A Sign Of Weakness. In This World, Only The Strong Survive.

Sebastian: Crying is a sign of weakness. In this world, only the strong survive.

Also Sebastian: (sees Ciel crying) (pulls him into a hug) Hush now, young master. It's quite alright. I'm here.

Sebastian: (watching Ciel play with [i.e., subtly question] other kids at a park)

Parent: Which one's yours?

Sebastian: (points to Ciel) That one.

Good Omens Crossover where after failing to get Adam to start the Apocalypse, Satan tries to "adopt" Ciel because the kid is close enough to being the antichrist.

There are two problems:

Ciel shows no interest in ending the world when it means no cake.

Sebastian strenuously objects to shared custody.

And soon, no one knows what to do because the antichrist was supposed to end the world, not manage to kill the devil.

For me, it would be hilarious if Sebastian turned out to be the Devil or a prince of hell because then you have one of the most evil demons in the world experiencing the struggles of being a single parent.

Asmodeus: Er...boss...can you pop down here for a bit? We need an executive decision on when to start Armageddon.

Sebastian: Not now. I'm busy chopping up the brussel sprouts so that they're small enough for me to mix into the young master's pie without him noticing.

Finny and Ciel make a snowman, but Finny has this idea that if he sings a certain song, it will come to life. Ciel is just humoring him...but it actually works. Only the Snowman isn't exactly a benevolent, and the two need to get Sebastian to take care of it for them. Which he does, but not without lecturing them on summoning things they don't understand.

Well....