A boy killed his parents but has no memories of her crime. A scientist destroyed her lab—no memories. A student gave a rebellious speech—blank as well. Mad and clueless, they went to the asylum. However... Happenstance, coincidence, enemy action. But who is the enemy, and what is their goal?

You, a promising detective, drink coffee when a cute girl comes to you and asks, "Why don't you use Akasha like me?" Just a child. Innocent—yet somehow eerie. "You look worried... Something wrong?"