In japan, there's a virus that could change one's sex. Hibiki-kun, who is a trap was exposed to the said virus along with his friend. Hibiki-kun's friend, Akira turned into a girl while hibiki-kun stays the same as a trap. Romance bloomed between them.

tentang jepang yang memiliki virus penyakit aneh yang bisa merubah kelamin, hibiki-kun yang trap dan akira teman cowok satunya terkena virus tersebut berubah menjadi cewek asli, sedangkan hibiki-kun masih tetap cowok trap dan komedi romantis pun tersaji di sini.