My god, What with Mangaka and the romanticization of abused victim ?.
The guy is actually misunderstood here so it is not the worst i seen, but even though it turn out all wholesome and shit. the boy still idolizing someome, in an extreme unhealthy harmful way, and didn't learn any better. So the person just happen to be "good" and it happy ending, but it is not, then he would just run back to him all the same