"Yuki-san, are you sure? I won't tell anyone..." Ishikawa, who came to visit his classmate Nanao's house, longed for Nanao's mother, Yuki. Ishikawa, who can't help but worry about Yuki, sneaks out of her room and goes to see how she is doing. And he knows Yuki's secret. Ishikawa impulsively acts obscene...
