In a world where negative emotions fester, five fairies from the strongest clans are sent to Earth to collect attachment in order to sustain their world. The fairies establish Bar F and live their lives as normal high school boys and a barkeep in order to protect their true identities and fulfill their mission. The boys encounter various female clientele at Bar F, each hiding dark feelings within their hearts, and the boys offer to help them overcome their troubles. The only thing they ask for in return is the client's permission to steal their heart. As the boys investigate the cause of each client's distress, they come across an individual who wishes to sow chaos and sin. With their quest on the line, the fairies of Bar F must unmask this individual's identity and put a stop to their plans, all while holding true to themselves.

In the shadowy streets of Lügenberg—a city where humans and demihumans coexist in uneasy peace—an unusual detective agency operates far beyond the reach of common law. There, vampire investigator Arne Neuntöte pursues the uncanny, blurring the lines between violence and truth. Everything begins to shift when Lynn Reinweiß, a noblewoman whose fascination with vampires outweighs her grasp of their danger, crosses paths with Arne. The two form an alliance in pursuit of bloody mysteries that emerge from Lügenberg's darkest corners as death and deception surface beneath the city's gothic veneer. Through each case they solve, Arne and Lynn discover time and again that truth is more elusive than what any surface can reveal.

The forces of evil are on the rise. When the evil mastermind Sister Jill transforms one of her girls into the bestial Breast Claw and sends her minions out on a mission involving the group Panther Claw and a jewelry store heist, Honey Kisaragi departs from her Catholic girls' school to confront the threat as Cutie Honey. But that's exactly what Sister Jill wants, as she desires Honey's Airborne Element Fixing Device, which allows her to transform into Honey's seven different forms. Meanwhile, Sister Jill is also on the scene in disguise as Inspector Genet, trying to worm her way into Honey's confidence from a different angle. (Source: ANN)

Fourth season of Mairimashita! Iruma-kun.