Kikuru Madan, a seasoned guard, feels he's wasted his youth serving in the Mebuki guild and wants to retire early. However, he's hesitant to leave due to concerns about the guild's future without him. To find a suitable successor, he's assigned four new recruits: Hitamu "Hitamuki" Kyan, a high-energy beastwoman; Maidena Ange, an exceptional but slightly awkward prodigy; Toxico Dannar, a laid-back trainee; and Hanabata Nohkins, a strong but sometimes perverted member. The guild's stability is threatened by a recent shift in monster behavior targeting women, adding to Kikuru's concerns and responsibilities.