Housamo Headcanons
Kentaro actually isn’t flirting with people he actually just says whatever he’s thinking. He’s just honest and straightforward. (He’s asexual and he has a huge crush on Ryota but he doesn’t know how to show it outside of just being friendly. Kentaro also doesn’t “compliment” Ryota because he’s worried Ryota would think he’s weird)
Kyoka and Kengo’s relationship wasn’t planned at all. In fact it was Kengo that confessed that he had feelings towards her when she was upset about Oniwaka dying (She was actually mad at him for that but eventually they got over it)
Kai is probably the one sibling that doesn’t involve himself with people. He’ll show up and go to class but he’s got a whole different group of friends.
Kade is actually the smartest of the siblings he’s also the most realistic. He doesn’t trust a lot of people but he wants to learn. (He’s also asexual like Kentaro)
Kenji is the baby brother and goes to middle school with Sitri who’s his best friend (Sitri is also good friends with Kyoka because of Kengo)