I'm sure Takatora brings up school often. If it weren't for the fact that Kouta has a Driver and Ryouma doesn't want to lose Kouta's oh so interesting data, Kouta would be sent to university. Kouta worries about Micchy, but the best he can do is be there for him and hope he doesn't melt down.

(Takatora-muse is giving me a scenario where Kouta didn't move home but Takatora enrolled him in university anyway. Because Kouta needs to be kept safe too, in a way.)

As long as they know it, that is good. Sometimes you have to unload on your family issues.