Siblings and Sex Akira’s Forbidden Healing Journey Begins

Segawa Akira, a high school student, is discovered masturbating by his older sister, Yuu, who decides to assist him. Concerned, Yuu consults physician Tachibana Kimiko, who reveals Akira’s condition can only be alleviated through sexual activity. This leads to Akira’s intimate encounters with Yuu, Kimiko, and his childhood friend, Takamori Sana, transforming his life into a series of passionate experiences.