Every year during summer vacation, Yuka helps out as an assistant for the study camp her teacher husband holds for his students. The energetic students began their study session, but Yuka was concerned about one student, Manabu, who seemed out of place. He harbored loneliness and had a personality that made it hard for him to say what he wanted due to always reading others' expressions, as her husband had told her. And Yuka herself felt lonely with her indifferent husband. That evening, after the students had fallen asleep, Yuka sneaked into their room and pressed against Manabu's back…
