Not only were Rion and Kotomi Amami the ace members of the karate club, they were also ace members of the choir club.
Ever since they were young, they had composed their own music. Their own songs had even ranked top 10 in some review site rankings multiple times, and they had some fame in the music circle. They were already at the level where if they wanted to go professional, they could easily find a music production company willing to sign a contract with them.
After hearing that from them, and with Hoshi adding his own opinion, Seiji now had a much better understanding of just how excellent these sisters were.
"Why didn't you two sign a contract and go professional, then?"
"Because we don't think it's time to do so yet."
Rion and Kotomi explained that if they signed a contract and went professional, they would be dealing with the real market, which would be a lot crueler than just putting their songs on the internet for free.