A romance novel about Katakura Yui, a 40-year-old single woman who has lived by thrift until a cancer diagnosis leads her into an odd relationship with Sena, a pink-haired host she meets in the hospital. It treats life under a limited time horizon with a light touch, while tracing shifts in money, intimacy, and family ties.

After a cancer diagnosis, Yui begins to rebuild her life through an unusual relationship with a pink-haired man.