Sexual Hunter Riot

The Kirionira are mysterious demons that invade the human world through people's dreams, threatening humanity's very existence. The only known defense against these creatures are special hunters who channel their sexual energy as a weapon to combat the supernatural threat. Riku Yoichi, a young man from a distinguished family of hunters, possesses an exceptionally powerful libido that makes him a formidable warrior against the demonic forces. After leaving his hometown following middle school to pursue his calling as a hunter, Yoichi returns years later to find that the battle against the Kirionira continues. However, he now faces an unexpected challenge: his once-potent source of power has mysteriously diminished, leaving him unable to fight the demons as he once could. With the threat still looming over his community, Yoichi must find a way to reignite his abilities while navigating the complicated dynamics of reconnecting with his childhood friend Namba Midori and her classmates, who prove less than enthusiastic about helping him recover his lost strength. (Source: MangaHelpers)