It's true they both have detectives but so far it's some people would speculate Cain being Suspicious, There was even a part saying He apologize to Jooin for tricking him.. But about what exactl? but other than that I'd say Cain is still a good Guy, as for Yahwi hmmmm... He's not the so called perfect BF, He's just have a habit of not expressing himself. But the way I see it He's bullshit thinking he can play with person's feelings hmph.
So I said what I wanna say,
Thank You
and hope Yahwi changes for his sake.
I think he tricked him about his living situation and rented the bad apartment on purpose so he could live with Jooin. Thats at least how I understood it.
Cain hasn't done anything bad and Yahwi has done A LOT. So what if Cain has scary eyes, it's still too early to judge him. Lmao the people always saying "cain sus" and going on and about how Yahwi is much better like Cain is the most horrible person in this manhwa. bruh, anways team Jooin ftw