HELP! I'm stuck in the Multiverse while cosplaying as Rambo

Naoto, a normal guy living in 2016, doing usual shit like watching porn and complaining about how unrealistic harem is in a knock off comic convention near his house; well... that is, until he notices that he is alone in a white room with this one other guy sitting on a chair. Cover by: Êmɾıöıx#6763 on discord