I already answered this question many times, if you want the long answer, I can give it to you but tl;dr:
Cain is too sus bc he lied to Jooin about not knowing korean and I just know he has some hidden intentions. The fact that we know NOTHING about him is just too weird, he calls Jooin “master” and he just seems too dependable and may not show it but I think he has some obsession problems lol, this last part is just an assumption.
Yahwi and Jooin have known each other since childhood and despite the fact that there’s a big communication problem and Yahwi is kind of an asshole. He really is trying to improve. And that personality of his was imposed.
How some of yall are team yahwi I’ll never know