Kou didn't mean to run away.
He was going to cope with all the insults or intervene like he usually would. Yes, normally, he would not mind if they shifted their anger towards him. But when he recalled the sight of his kohais gradually getting better and better, it frustrated him. He is the only one not improving.
He suggested the idea for them to live together, just the four of them. Because he truly believes, that's what they need right now. Right now, they do not deserve to pair up with Terashima Yuhi, despite what it looks like in the eyes of their fans. Right now, Yu-Yu is the only one on the level that can be called a legend.
The other three felt so desperate to write eleven new songs and release an album like that because they also know it. The way they are now, it isn't enough; if they remain this way, the guys in Nanairo feather will catch up with them.
