Tenshi Serina battles every day as the heroine of justice known as Lemuria Heart. At the all girl’s school she attends she is known by the maidens there as Prince-sama, but she is hiding a secret, she is a futanari. This secret is discovered by the villainess Misty Elektra who toys with her using sexual pleasure and Lemuria Heart is dropped into a futanari hell! Can she be victories without losing her heart of justice!?