Their city is overrun by criminals and three remarkable high school students. Yuugo, Rikiya, and Tasuku are resolved to cleanse the city by any means necessary, even if it involves violence. During a routine night of dismantling gangs, Tasuku encounters a beautiful girl held captive. She helps him survive what would have been a fatal wound by allowing him to glimpse the future. Tasuku rescues her and brings her home, where he learns her name is Noa, though she is mute and has lost her memory. Even more intriguing to Tasuku is that she bears the same tattoo as the person he has been searching for for years. This ignites a chain of events that leads to the dark and mysterious pasts of Tasuku and the other characters.