In modern Tokyo lives an ordinary guy Kaito — a 28-year-old office clerk tired of the routine: endless reports, a strict boss, and a complete lack of personal life. 😩 But everything changes when he meets the seductive demoness Rileyla — a sexy succubus with horns, a tail, and wings. Rileyla seduces Kaito, revealing his hidden desires, and seals a contract with him through a passionate intimate scene. In exchange, she grants him the power of hypnosis in his eyes — a magical gaze that allows him to influence the women around him. Now Kaito collects sexual energy (the essence of lust) from girls to nourish Rileyla.

[From Steam]