Uro Yamada works as part of the "Hero Retirement and Return to Everyday Life Assistance Agency," which takes heroes from another world back to Earth and helps them reintegrate into everyday life.

Mikami Inaba was fighting a person from another school on her school's rooftop. As they fought, her friend Haru appeared. Seeing Mikami distracted, the man charged at her, causing both of them to break the nearby rabbit cages & fall off the roof. As Mikami fell, she desperately grabbed the rabbit. Suddenly, a flash or pink light appeared. Mikami fused with the rabbit, and gained another personality, called Mimika. Now, Mikami only appears when various people threaten her and her friends. Otherwise, she takes on the form of Mimika.

Set in Kunitachi City, Tokyo. Reiko Houshou, a rookie detective at the Kunitachi Police Department, is also the heiress of the globally renowned "Houshou Group." She tackles challenging cases alongside Inspector Kazamatsuri, heir to the "Kazamatsuri Motors" family business, and Kageyama, her sharp-tongued butler and driver. With biting remarks like, "Are your eyes merely decorative, my lady?" Kageyama not only critiques Reiko's lack of deductive skills but also brilliantly solves the mysteries at hand. A sharp-tongued butler meets classic detective fiction in this unique mystery series.

Fifth season of .