Kana (Hitokano) is a 23-year-old freelance worker. She loves sex and has been dating a 30-year-old office worker for two years. They started out as friends with benefits and began dating casually. She claims to have almost no complaints about her boyfriend, though she often feels lonely due to his busy work schedule. Kana insists that one-night stands don't count as cheating and admits to cheating about once a month. When she gets drunk, she gives in to her urges and ends up cheating again.