
I might be over thinking this but I think Mike is gay or bisexual and has internalized homophobia. All he goes on about is "she is the nasty type, i hate the nasty type" whenever a girl asks him out. He always has a negative thing to say about women. It just sounds like he has no interest in women at all. He's the nasty type too so he has no right to judge people. The Dude has super high expectations for women or he's gay.

I imagine there's goes to be a little moment between Sebastian and Modri in the hotel's infirmary before they go to Modri's room to talk. They agrue for a bit then Sebastian caresses Modri's cheek and tells Modri to take him to his room so they can talk in private. Rodney starts to feel uncomfortable so he excuses himself and leaves.
Maybe the real Hikaru was having trouble distinguishing the kind of love he had for yoshiki too? He probably had internalized homophobia thinking he's mistaking patonic love with romantic love and it's not normal to have feelings for a guy.
Now it's amplified and more confusing for "Hakaru" because Hikaru is now a immoral being learning how to be human. https://mangafire.to/read/hikaru-ga-shinda-natsuu.7j3o6/en/chapter-11.5