Cold, calculated, and utterly emotionless.
Hikaru has built a fortress around her heart. Trusting others is a risk she refuses to take. Each night, she roams the shadowy streets of Hiroshima, evading those who seek her extraordinary abilities while battling the hidden darkness that plagues humanity.
But everything changes when she crosses paths with a young man who challenges her isolation. Desperate to keep him at a distance, Hikaru finds herself drawn to his persistence, forcing her to confront the woman she lost in the blast years ago.
Can he help her heal and embrace the future, or will her haunted past jeopardize not just her happiness, but the fate of the world itself?