Might, an adventurer, lost his life while defeating an evil dragon. However, he has been brought back to life by the blessing of a goddess who heard the wishes of the companions who saved the world together. Furthermore, due to Might's own wish, his class changed from "thief" to the "sage" class he had always admired! When Might, heads to the beginners' guild, having reverted to Level 1 as the cost of changing his class, he finds the girls of "the beginner party" arguing for some reason...? A second-life adventurer's harem fantasy begins! (Source: Kadokawa, translated)