What do you think Yuu's response would be if Mika tried to leave the squad? Say in a scenario where Mika felt like he was a burden or causing too much friction/tension because of his distrust of the squad or Guren. Or he felt like Yuu cared more about Guren than him and decided he was better off leaving. How do you think Yuu would respond?
I believe Yuu would understand what Mika’s trying to do and he’d try to stop him, but perhaps he would tell him something like “I can’t force you to stay but I want you to” bc he’s his family and, you know, the rest.
If Mika mentions something about feeling like he is a burden or that he doesn’t belong there Yuu would start another one of his long and cheesy speeches about love and family until he convinces Mika to stay, though there is a chance he might let him leave if he feels like Mika really doesn’t want to /be/ there, but not without letting him know that he means the world to him, etc.