Holy crap. This manga actually has me liking the haughty rich girl character, Mirei.
She's genuinely nice and looks out for the MC as a human being, with no deep meaning behind it. She has her clear flaws as a human, namely her jealousy and feelings of ibferiority, but she treats the MC with actual respect and tells him to value himself more.
I don't even necessarily want to see her in any kind of romantic relationship with the MC. I just want to see her be a super cool person.