Review Detail of Ethan_Archer in The Magician of Sound

Its starts out pretty chill. Then they introduce some evil young master type character that clearly deserves death, but for sone reason the mc doesnt kill him? Its not really explained that well. Also, I find it unrealistic the 2 high school kids cant report this guy and his family to authorities. On top of that theres supposedly 400mill people and somehow only 3 S Rankers in japan? Unrealistic again.