ONI SLAYER SYSTEM

He watched weakly as his heart was plucked out by an Oni. Not only that, his whole village including his parents are wiped out by the Oni. Giving in to his fate, Hel accepted death............................but instead, what came was......... [ Conditions for unlocking the Oni Slayer system has been met] Now he resolves to become the strongest Slayer. To wipe out all Oni.