Due to unknown reasons, he came to a parallel world in Japan and accidentally occupied the body of a high school student who died unexpectedly. He unexpectedly did not inherit any memory. However, the first difficulty he faced after arriving here was that he could not speak the language…Just when he was unable to communicate with his family, a heavenly voice came, the black technology system was activated, and the initial prop translation konjac was distributed.This is a story about a man of above-average intelligence and almost no physical strength in a classroom where strength is everything.