Damn, they usually unlock superpowers after finding out their girlfriend cheated on them or something, but this MC had a loyal, loving girfriend and just died. How sad, I hope it doesn't end there. Maybe she comes to that world as well, or he goes back to Earth, or maybe she has a doppelganger/alternate version of herself in that world or something. Anyway, from the end part where it said he had to be a virgin as a martial artist, I hope he gets around that, with this story having romance or a harem. Can someone spoil me and tell me if it has romance or a harem?