The assassin belt, who was a member of the brave party, is seriously injured in the final battle with the demon king. Although his wounds healed, he was unable to exert his power due to the aftereffects, and was forced to withdraw from the party. One day, Belt returns to his hometown to live a second life and meets a girl named Meiru, an apprentice adventurer. She has the power of a "Saint" and tells him that what is afflicting Belt is not her aftereffects, but a curse... An exhilarating flash fantasy in which a once retired SSS rank adventurer throws himself into battle against mighty monsters again!