Synopsis
Seth is a loner kid of his class with no friends. Suddenly his whole class is transported to another world . But the Goddess asked for one student to be sacrificed where Seth is chosen to be the sacrifice by the whole class. After the end of his human life he is reincarnated as a skeleton zombie , weakest monster of the isekai world. This is the story of the weakest monster and his revenge on those who were responsible for his death