Shipped with special edition of Atto's spin-off manga , the OVA serves as the 13th episode of third anime season .

The third season of .

In a certain world bubble, the conflict between the armed dolls and the dead soldiers is never ending. With the conflict between the two escalating, the stability of the world bubble is gradually decreasing. To save the world from collapse, human beings set up a special organization to manage and control the dolls. In order to cover up the dark truth, human specially gave the organization a very cute name: "Renou Xueyuan" - "Doll School". —Ahaha, just kidding! How could it possibly be anything like that? (Source: Official Weibo)

When Li Shi was born, a vision descended from the sky and became the host of the remnant soul of the soldier, and was hunted down by the sects of the world. Li Shi's parents lured the enemy away for Li Shi's safety, while Yuan Chenyang took Li Shi to escape and hide, and finally settled in Linhai City, hiding as a fisherman. In order to find his parents, Li Shi decided to enter the sect through the five-year selection of Linhai City, and Bai Xiang, the master of the formation of the Yaozu's gate, simulated the magical powers of the soldier master on the basis of the formation of the ancestors, and developed a method that can absorb The evil formation of the spirits and spirits wants to turn the mountains and seas into the blood of the monsters, and Ying Gou helps them try the formation. A conspiracy is shrouded in the sky of Linhai City, ready to go.