[Shirabe Shiki] kaikan kikan kisei gat ④ [End] (AI Translation)

An energetic student rushes through school corridors, calling out to a classmate while clutching a bag, only to be interrupted by a sudden, intense encounter that forces her into a compromising position. The scene shifts to a private room where a parasite organ implant kit is presented, promising a month‑long, pleasurable transformation that can be triggered with a single insertion. The climax erupts with vivid ahegao expressions, explosive squirting, and repeated climaxes that drive the protagonist into ecstatic madness.