So he'd probably fight Takatora on that. I think he has a decent chance of getting Takatora to concede, too (although maybe not quite agreeing). Ryouma can still play on older brother protective instincts to keep Kouta's involvement under control, too. Ryouma might have a harder time getting at Micchy, but Micchy is unstable (partly just because of his age) and doesn't need a lot of pushing.

Kouta might have trouble arguing that he can't be in school but can do unskilled labor, though.