Kazushi comes to visit his sister’s friends, the alluring siblings Kotone and Ayane Shirakawa, only to find himself utterly captivated by both sisters’ charms. A tangled web of desire ensues, leading to a whirlwind of intimate encounters that blur the lines of propriety and affection. The raw physicality and emotional vulnerability shared between them forge deep, lustful connections that grow more intense and explicit with each clandestine meeting.