Shuichi Akai, the FBI's ace sniper, was once known for his ruthlessness and precision. However, during the gunfight on a rainy night, he fell, his blood mixing with the rain, and his consciousness gradually blurred. As he lay dying, he thought of the girl who died because of him, Miyano Akemi.
"Is it worth it?" He asked into the void.
A mysterious light gave him a chance to come back...
Purpose: cherish the present moment