Never-Ending Timeloop N-E T

The normal teen living with his family is suddenly taking out of his reality and has to find who our what killed him. But when/if he does, he is reset to somewhere completely different. He must get in possession of the _____ in order to get back to his world.

But he'll be unable to get to it unless...



He were to massacre people along the way or go insane and be killed himself.