Naruto Holy Grail System

Introduction: It is the 28th year of Konoha, more than ten years have passed since the five major powers signed the "truce". Territory, seeing that a new round of ninja world wars may break out at any time, Konoha, who is known as the most ninja village, is facing internal and external troubles.At this time, the boy from another world threw away his integrity and held up the holy grail that was dripping with mud.