Junior high school boy Konta-kun finds a set of magical lingerie that transforms him into a high school aged girl. Each time he wears the panties or bra, the transformation triggers gender-bending scenarios—and sometimes idol‑style fantasies! The magic originates from the lingerie once owned by a now‑destroyed lingerie shop connected to Konta’s mother (or close friend’s mother). Expect humor, occasional mischievous transformation scenes, and cross-dressing fun.