The Warlock of Selfishness (Union x Re:Zero x Harem)

I know you've read a lot of these, so i will be short: Bullied Y/N tries to prove that you can be a hero even without powers, gets killed by the bullies, goes to another world, gets stronger, earns a lot of achievements, gets a lot of girls (some of them will be Yanderes. Yes, you heard me right.), returns to his own world, beats the shit out of his bullies and fake heroes, changes the academy for good, the end. Yeah, that wasn't so short. Anyway, have fun.

I only own my OC.