him leaving wont fix the issue. The issue is that Rua herself, and she is backed up by one of the most powerful people in Japan, so his fight isn't against Rua but her grandfather's empire. Last chapter cousin or whoever already told this. If he switches schools, she will just shift and continue whatever she is doing rn. Buying a couple schools is not big deal for her grandfather. She will just follow him, and killing isn't an option either.Still wondering why he is not just leaving. He is obviously competent enough to take care of himself where ever.