I guess she's a married woman with dark roots, no hobbies, and no good luck, and whose husband doesn't like her. The only time she feels happy is when her daily routine of pussy masturbation makes her feel good. One day, when she was masturbating while listening to the sex sounds leaking from the next room... Kana's moans were so loud that her neighbor found out! Kana took this as an opportunity to show her lewd nature, and in addition to her husband, she also met her neighbor's man.