Summary
The Kirionira are malevolent beings from another realm who enter the human world through dreams. The only protection against their attacks are the hunters, who harness their sexual energy as a weapon. Riku Yoichi comes from a family of skilled hunters and possesses a strong libido, making him a formidable fighter. After leaving his hometown in middle school to defeat the Kirionira, he successfully vanquishes their leader and brings an end to the war. However, this victory comes at a cost – Yoichi loses his sexual prowess. Upon returning home, he discovers that the demon invasion is not yet over, but without his sex drive, he is unable to defend himself. He attempts to arouse himself with the help of his childhood friend Namba Midori and her female classmates, but they refuse to assist him.