The protagonist, La Belda Henry L. Bain, is the only prince of the ancient empire "Bain-Family". She is the only son of Belda's father, Emperor Belkin Henry R. Bain, and the only legal successor to the empire. In order not to be assassinated by the enemy before taking over the throne, Belda hid his identity and went to the Oji Valley Boys' High School in Japan. In just one day, he became a celebrity in the boys' school and received the title of Gentle Emperor. He became the 13th official candidate of the ancient clan at the Oji Valley Boys' High School. One day, Belda accidentally found a black magic book in the middle of the lawn. When I opened it, I found that it was all filled with ancient characters. At night, the God of Death came and asked, "How can you see my notes?" The God of Death was very surprised. It cannot be denied that Belda has the eyes of a god and can see all objects related to the "material world". Therefore, she was selected by the God of Death and became the third God of Death in the deadly Death - "Charming Soul".