On a trip to Hakone to see Koichi’s mother, Saki is deeply touched when Koichi confesses his reasons for having married her, and the couple returns to Tokyo on good terms. Meanwhile, without consulting them, Saki’s mother, Midori, has organized a birthday party for herself at the couple’s new apartment. What’s more, she’s gone and invited not only Saki’s ex-boyfriend but also Koichi’s colleague, Jun, who secretly has a crush on him!
