Madoka Misumi is a woman with an unapologetically strong appetite for sex. Her life takes a bizarre turn when she meets Toru One, a man who is completely invisible. Intrigued and aroused by the possibility of invisible sex, Madoka quickly becomes fascinated. The two enter a no-strings-attached living arrangement, initially treating each other as purely physical partners. However, as they share a home and daily life, their dynamic begins to shift. Madoka finds herself wanting to see Toru's expressions, and Toru begins longing for genuine connection. What started as a purely carnal agreement slowly develops into a romantic entanglement, as both characters discover feelings that go far beyond the invisible barrier between them. The story explores the tension between physical desire and emotional intimacy, set in a contemporary urban environment where the supernatural element of invisibility serves as both a literal and metaphorical obstacle to true closeness. The narrative arcs move from a casual, almost transactional relationship toward a deeper, more vulnerable bond, punctuated by comedic and erotic situations that highlight the absurdity and sincerity of their unusual romance.