the protagonist of this novel is Frey he died and was sent to another world where he was supposed to be a hero but he end's up getting summoned to yet another world by a demon, he decides to make the best of it and have his adventure there and he gathers a harem of slave girls while he's at it
-----------------------------------------------------------------
I'm more active webnovel under the name " the_chilled_crow "so I'm more likely to reply to your comment's there and it's many chapters ahead