I was being used like a slave by my beautiful childhood friend who reigns at the top of the school caste hierarchy, but when I became thin and handsome, her attitude completely changed. However, I already have a fiancée, so it's too late even if she tries to seduce me.

I'm at the bottom of the school caste system, being used like a slave by a beautiful girl childhood friend at the top → When I became thin and handsome, her attitude completely changed, but I already have a fiancée, so it's too late even if she tries to seduce me. I have a cute fiancée, you see... At first, I didn't think she was cute, but I did think she had big breasts.