Synopsis: I was Summoned to Another World Where I Got Rare "Adults Only" Skill! Let the Fun Begin!

The skill bestowed upon the protagonist, who was summoned to another world to resist the Demon King's invasion, is "Transformation of the World (R18)." This is a super-capable SSR skill that allows him to copy skills by "capturing" targets and leap back in time as many times as he wants to a starting point! "Capturing the target...? R18...? Does this mean it’s a Gal-game!? And an erotic one at that...!"