Honjo is a pretty girl but is quiet, cold and rarely talks to her classmates. Her classmate Horiuchi secretly likes her even though she has a boyfriend who is a university student. One time, while sleeping in the school's gym, he was accidentally woken up by Honjo, which was also the first time she talked to him. After entering the library, the two began to confide in each other about their personal matters. Although she already had a boyfriend, Honjo could not often meet or contact him due to the great distance, so she hoped to have sex with him so she could feel what it was like to have sex. Fortunately, Horiuchi had had sex with his ex-girlfriend twice, so he did not disappoint Honjo on his first time. Even though they were so close, Honjo still did not want people to know about their relationship and she always acted cold towards him in front of everyone. Too disappointed, in the last time he had sex he decided not to wear a condom in the hope that Honjo's thoughts would change but things got worse.