[Chuuya could leave Dazai here. He's brought him home, they're at his place, he can find his own way up. But he won't. Because he still doesn't trust the mood Dazai is in. And because it's so rare to get honest answers out of him like this, he feels like he has to take advantage of it. Dazai does the same, when their roles are reversed, even though that's more of a frequent thing.

He'll offer a bit more support as they walk up the stairs, just in case the effort makes him lose his balance.]

So maybe you're actually better at being a normal person than me.

[He says it a little too quietly, but it's still half a joke. Half mocking, really.]

Working hard doesn't make me a masochist when it actually gets me what I want, Dazai. You don't work, and you're miserable.

[Just calling him out here.]