[Mosaic removed] Yuichi suffers from unforgivable love for his stepmother Saya. Saya, sensing her son's feelings, only allowed him to watch her masturbate, saying, ``As long as it goes this far...'' However, there is no way that young Yuichi can endure it, and he attacks Saya. However, at the same time, his father, who was at home, suddenly started suffering and died. Forty-nine days have passed, and Yuichi continues his relationship with Saya despite feeling guilty about his late father, but an unexpected person calls out to him.