Dimensional High School: the Only Summoning System

Recommending cool articles along the way, creating the legend of guardian spirits. Thousands of years ago, mankind was in catastrophe, and dimensional star beasts invaded the earth. Human beings awakened possessed soul rings, and could invite dimensional characters to possess them to fight. Xu He traveled through time and bound the only summoning system. A goddess said: "My possessed star spirit is Aunt Yonkou." A monster said: "My possessed star spirit is Naruto of the Six Paths." A genius said: "My possessed star spirit is the God of Death, Kurosaki Ichigo." Xu He: "Why are you all possessed and can't be summoned?" Everyone: "Nonsense. Star spirits can only possess spirits to fight, but cannot be summoned." Xu He looked at the six paths of Pain behind him, the god of death Aizen, the three pirate generals, the Fairy Tail Black Dragon... They didn't need to be possessed. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.