Okaa-san to Issho!: 40-sai no Mitori to Koi
お母さんと一緒！～40歳の看取りと恋～
A 40-year-old woman named Erina, who has dedicated herself to both her career and past relationships, receives unexpected news from her mother. Her mother calls with an unusual tone, revealing she has stage 4 colon cancer. At the same time, Erina learns that Tani, a single friend from college, is getting married.