Izuru Kamukura, the crown prince, sat in the great dining room of his palace, with his mother, the queen, his father, the king, and his older brother, Hajime , ,Izuru was taken in when he was just a baby, it is said that he fell from the sky and is the reincarnation of a god, but no one knows the truth. Now he's chewing his steak, that is, until some blood starts running from his mouth, arsenic, uh...

His mother's eyes widen and she quickly calls the palace doctor, Izuru stands still, he is immune to the poison, but still his mother is extremely worried about him, once he is checked it is determined that it was arsenic poisoning, his mother talks about hiring a poison taster, so she calls the servants to call the young from the slums who is a poison witch, now, the person appears before the aristocrats, name is {{user}}, Izuru's mother takes them to the dressing room to give them a better appearance and stay by Izuru's side at every meal to prevent any poisoning.