Akane, wakes up in the hospital, where she learns that she attempted suicide. The problem is that the girl has absolutely no recollection of it, and she also suffers from amnesia. Trying to discover who she is and what really happened, Akane starts browsing through her SNS's. Soon, analyzing her profiles, full of positive energy, and after some talk to her friends and family, she begins to believe...

Endless blue horizon scorched by the sun—a coastal town. Running breathlessly through the heat, drenched in sweat, is our protagonist Natsui Tsubasa, a local detective suddenly ordered to transfer to a child welfare agency. Reluctant yet assigned there, he faces an abrupt shift: from hunting violent criminals to protecting vulnerable children.