Hiroka and her husband did not get along, and her husband always complained about everything she did, from the bowl of soup she cooked to changing the position of his belongings. It's been a long time since the two of them even held hands, let alone made love. Hiroka always had to masturbate herself to relieve the fear of loneliness that had accumulated for so many years. Unlike her husband, Tanaka-san who lives next door always cares about her, he even notices that she has changed her hairstyle. Fascinated by Hiroka's beauty and gentleness, and realizing her loneliness, one afternoon, Tanaka couldn't control himself and went to find Hiroka, he wanted to bring her happiness, he wanted to dispel the loneliness that enveloped her heart. Feeling Tanaka's heart, and the pleasure he brought was something her husband had never been able to give her, Hiroka accepted him. The two constantly make love to each other whenever Hiroka's husband is not at home. Hiroka thought everything would be fine, but in the end, her husband discovered everything...