This is what happens when a normal highschooler is kidnapped by an Omnipotent God who wants to experiment on something new.
"What would a normal person do when put in the same situation as the main characters they rebuke."
(This is technically a Harem, but he'll be going to many worlds and will only have one girl in any world he goes to, never two girls at the same time)
(I also try to keep the total number of girls that he has a relationship down because it's more of a compatibility thing with him and not just getting with a girl because she's pretty, it's if they click together, so he won't have a lot of girls he'd get with, so no getting a girl at every world he goes to)
