It was a pre-destined love and marriage for Sonoko and Tetsuo. They tied the knot and became husband and wife no questions asked. All is well then. Well, perhaps not. Each holds a secret that even the binds of matrimony cannot untie.
Shiino one day finds out that her best friend Mariko has committed suicide. After snatching Mariko's urn from her abusive father, Shiino heads to Marigaoka Cape, a place Mariko always wanted to go.
Nagisa is transgender. She grew up in Hiroshima as a man, but now lives in Shinjuku, Tokyo as a woman. Due to an incident, she begins to live with middle school student Ichika, who is a distant relative. Ichika has been neglected by her mother Saori. From living in solitude by herself, to now living with Ichika, Nagisa develops maternal instincts for the first time.
