On the tranquil Sentan Island, seemingly untouched by the ongoing war, Akiyuki, a young boy living with his mother and separated from his doctor father, finds his life irrevocably changed.
A seemingly ordinary trip to deliver his father's lunch turns chaotic when an explosion rocks his school, involving his friends Haru and Furuichi.
A mysterious light from the explosion merges with Akiyuki, granting him an unknown and painful power.
Guided by a mysterious white-haired girl, Akiyuki must learn to control this newfound power as the war threatens to shatter the peace of Sentan Island.
The series follows Akiyuki's journey to understand his transformation and the role he must play in the face of encroaching conflict.