MARKERS (SINNER'S CREED)

Sun is the name of a kid who used to get headaches whenever he chants or listens to buddhist prayers. Whenever he listens to chants he experience unbearable pain. But whenever skips his listening to the chants, he becomes very athletic and even strong but starts acting like a monkey and breaking his own house's things etc. One day he and his two friends end up locked in their school and something unexpected happens. A stranger suddenly attacks them trying to kill him and his friends then they lock themselves in their classroom and then they hear a sound "Boom!!", " Swoosh!! ".The door shatters and explodes into small pieces and the walls get cracked. They overhear a conversation. "Hey! What about this person's boss" " He will take care of it, that monstrous bastard! "