"We're moving tomorrow..." With their only son Akira graduating, the husband decided to settle down at his business trip destination. Hotaru and Akira were busy cleaning their long-time home. The bathroom held special memories; when Akira had a heartbreak... or when he was covered in mud from club activities... they would always expose themselves to each other, naked as they were born. And somehow, this turned into a forbidden relationship... That night, during their last bath together, Hotaru tells Akira something...
