Mc's brother was said to have committed suicide because of a fan letter (anti) as shown in the investigation report. Some yrs later, MC discovered that the brother's friend is a suspect to his death (he saw that the album his brother wrote was released by the brother's friend as a debut album in a news, so he started suspecting). Mc investigated. his brother's account's activities was a yr ago, although he died yeeeears away before that. So, the agency used his bro to the very end—is another thing he discovered. He wanted to confront that brother's friend (mc branded him as traitor) but he got into an accident so he died . . . not. He regressed back in time, months after his brother died. And he decided he'll do everything he can to be an obstacle to the traitor's debut. He joined a survival program for bands and stuff happened.
Latest chapter, the scumbag sociopathic CEO where his bro once belonged wants mc in their agency so he plans to get him aboard by force.
They wanna break mc. Freaking bastards. They deserve to die.

A summary anyone?