Hidako Masamune, a high school student tormented by relentless bullying, reaches his breaking point and contemplates ending his life. However, before he can act, he and his classmates are suddenly transported to another world. Bestowed with extraordinary abilities, his classmates revel in their newfound powers—while Hidako is labeled a mere “healer,” the weakest of all. Deemed useless, the king banishes him to a distant land, hoping to be rid of him. But before his exile, Hidako vows revenge—against the king, the kingdom, and the very classmates who once tormented him.