Yae[八重], a Japanese junior high school student who has a difficult relationship with both his mother and his classmates, goes to visit his grandfather's house in a teleportation machine as usual. At that time, a planet was engaged in a proxy war in which children from various planets were kidnapped and forced to fight.Yae is caught up in the battle, each nation trying to advance significantly, and the revolutionary forces aiming to overthrow them. The same kidnapped children, the adults who take advantage of them, and the people who are heartbroken by them. Yae grows up through a single spring event. ****The author is Japanese and English is my second language.I translate Japanese novels that I have written.I would be very happy if you could tell me sentences that are difficult to understand.