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Synopsis

Souya Kuroi awakens with only a vivid nightmare of a colossal dragon engulfing the world in bands of rainbow light. Told he lost his parents and his memories in a peculiar incident, he depends on two unusual caretakers: Ginko, a lively maid, and a towering cat called "Sensei." Life in Saromisaka City shifts again when a teddy bear–shaped UFO appears and conventional forces fail. Seven mysterious figures repel the invader with the same rainbow radiance from Souya’s dream. Though the alien threat ends, those seven are identified as the cause of Souya’s prior suffering, and he resolves to take revenge. His pursuit of retribution draws him into a conflict that escalates to cosmic scale, as he confronts the so-called heroes while seeking answers about his past.