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Takemichi's life, steeped in routine and the realisation that all possibilities are lost, changes overnight. The boy can travel back in time 12 years to his school days. Now he can change a lot and save lives - not just his own.

To prevent the death of his beloved Hinata, Takemichi tries to prevent the leader of the Tokyo Manji, Maiki, from turning into a ruthless killer. At school, he can be considered anything: a bully, a hooligan, but not a violent criminal. He would never have hurt a girl for whom he had respect. Something must have happened, something serious. Talking to an old friend in the future, Takemichi knows what that turning point was.

He has a plan: the fight between To-Man and Möbius should never happen, Doraquen should survive

But the enemies unexpectedly attack first. Is this really it? Is Hinata beyond saving?