Yukine, an office worker at a black company, had a daily routine of stopping by a park alone after work to relieve stress while drinking canned beer. One day, she meets a woman named Ena wearing a tracksuit and glasses. The two of them get excited because they are the same age, and then suddenly it starts to rain... Yukine is invited to Ena's room. What she saw there was Ena's 4.5 tatami mat apartment where there was no room to put her foot... Erotic and emotional lesbianism nurtured by two people with completely different upbringing environments and personalities.