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[Sex change] [Urban martial arts] [Academy style] [Norse mythology] [No system] [Hot blood] [Group portrait] At night when they were returning home from extra classes during the summer vacation, Lin Qingyuan and his sister mistakenly entered a subway line that did not exist on the map. In order to return his sister to the human world, seventeen-year-old Lin Qingyuan died in Helheim. When he woke up again, he became her, with an extra power belonging to the last Valkyrie in his body. The academy calls her a "carrier," and the gods want her to be the knife that picks the dead. But Lin Qingyuan just wanted to keep his name, go home for dinner, and continue to be his parents' child and Lin Qiyue's brother. It wasn't until the dead began to call her and the sleeping nine realms gradually returned to the world that she discovered that the so-called "rescue" sometimes just meant deciding how to live and how to die for others. When the gods need the dead to wear armor again, and when the world forces her to become the new god king, Lin Qingyuan must make one last choice: Obey fate and recruit all the dead to win the war; Or cut off God's power and give the choice back to everyone.