In the music series, the male protagonist writes a self-help manual for the inner world

(Lonely Rock + Mygo World View)
Chen Xinghua, who traveled to a different world where the development trajectory of the world was different from that of the original world, felt that his future was bright.
He has a lovely childhood sweetheart, Goto Ichiri, but this childhood sweetheart is a little socially anxious.
He also has the standard cheat code for time travelers, but the name of this cheat code is called the Other World Male Protagonist System.
From this perspective, his future is bright, as long as he can solve problems including but not limited to the teenage hooligans who suddenly appear on the streets, the increasingly weird campus, his childhood sweetheart with a personality from a parallel world, and the girl band with increasingly severe gravity.
So Chen Xinghua set a small goal: not to be locked up in the basement shared by the three bands before graduation.