Lost in time and transported back to the Showa era, Takashi encounters schoolgirl Suzu. He finds her in a quiet, secluded place, her appearance striking a deep chord within him. Still a virgin, her innocence excites him intensely. His eyes are drawn to the white panties peeking from beneath her uniform, and as the scent of tatami fills the air, Suzu gradually opens up to him despite her shyness. Eventually, they cross the forbidden line, and he cums deep inside her. In that moment, their relationship is forever changed.