While I do know that he is not a bad guy, the delinquent part about him is stuck from others perspective because he doesn’t care about what other says while the premise of the story was, the school was for the good families to tie some relationship between them.
All and all, those 3 girls future will be bleak when they rat them and the next thing they know in the future is the fact that they will not have yuuki’s family backing because she will be the next head in the long run lol