[Genki Tarou] Ma●ir (Half-Foot)'s Changeling Sexual Relief

Marcille, a half‑foot girl with wide eyes, discovers that her partner’s member shifts shape during their intimate sessions, prompting frantic questions about a mysterious “changeling” ring. As the treatment intensifies, she experiences crushing pressure on her uterus and an overwhelming climax, while the partner’s relentless erection refuses to subside. The story builds a tense, erotic rhythm where each thrust alters the sensation, driving both characters toward an inevitable, repeated release.