Before the soul-piercing Naruzuo penetrated the world, he took control of the system after a lot of death ordeals. The protagonist has Itachi on his left hand who can challenge Madara alone, and Deidara on his right hand who can defeat a large number of cannon fodder ninjas. They secretly formed a force to disrupt the ninja world.
The protagonist's soul broke through the world barrier when it passed through, causing fragments of the sword demon world to descend into the ninja world. The fragments formed a world of their own, containing magical beasts.
The protagonist can obtain various resources by killing Warcraft, which can be used for himself and to train his ninjas.
