Three girls from Nanashi’s class are infatuated with him, making him feel uncomfortable yet excited. After the girls seduce him at his house, Nanashi becomes involved in a sexual experience with them.

After losing his virginity to Mio, Rina, and Megu, the three girls became excited and gave Nanashi immense sexual pleasure. Despite it being his first time, Nanashi experienced an intense orgasm and a memorable sexual debut with the three girls.