Rixsig Writes

Massive headcanon that Zen just loves to lounge around the house in various states of undress. When he first starts spending most of his time with Yoosung, at the bottom of Yoosung's depression spiral, there isn't much room for that because there isn't, in general, much mood for lounging. Zen switches full-time to caretaker/protector mode, and there remains no time or space for his comfortable behaviours. He is busy working, and on top of that he's keeping eye on Yoosung, cooking new things to try and get him to eat something, talking him through episodes, helping him organise his life again etc. etc.

When Yoosung gets more stable, they both quickly realise they like living together much more than apart. Yoosung's flat is barely suited to house one, let alone both of them, so moving in to Zen's is the obvious option. At last, Zen feels easier, because he's no longer constantly scared of losing Yoosung, but also, he's finally in his habitual space, however turbulent his relationship with it; and now he feels at home. So as soon as they are done moving, Yoosung starts bumping into half-naked Zen all around the flat. He walks in after gym, peels the drenched vest or tee off himself and goes to the kitchen to get some water topless. He gets out of the shower all ready for bed, in just a tee and underwear, and strolls around like that. He gets out of the shower barely wrapped in a small towel, because he forgot to get clean clothes. He splays out on the couch in nothing but a pair of boxers and watches the news.

Yoosung does ask him to have some decency.

Zen, of course, doesn't give much of a fuck.

Yoosung doesn't really understand that. His mom raised a good, proper, and well-behaved boy. Even as he is struggling to break free of her influence, old habits die hard. Yoosung doesn't really feel comfortable getting naked around people, he has designated clothes he wears at home, and for sleeping he has a couple of pyjamas. He isn't quite that confident in his looks, and he likes to be warm and toasty. But Zen's shamelessness does contribute to him feeling more comfortable in his own skin — and to the budding crush he's developing on his best friend.

Ironically enough, for Zen himself, who's trying his damnedest to ignore and stifle his own crush, sticking to his shameless habits becomes something of a way of convincing himself that he isn't in love. After all, he can still stroll around half-naked and not feel awkward. Or, like, aroused. Or in any way special at all.