Killing for love, can you really do it? Keigo Higashino likes the hero in the mystery novel The Dedication of Suspect X, a gifted high school math teacher named Shi Shen.

The stone god in the book is called "Dharma Stone God" because he was a once-in-a-century genius when he was studying at Imperial University. Later, after graduating from master's degree, he did not choose to go to university to study for a doctorate because he had to take care of his elderly parents. Instead, he went to a university near his home as a teaching assistant.

He thought it would be nice to learn mathematics, but never expected that this university could not do any mathematics research at all, and the students' foundation was poor. Disappointed, he couldn't take the teacher qualification exam and became a high school math teacher.

Finally, I learned that Stone God lost the meaning of existence because he could not develop in the field of mathematics a year ago, and planned to commit suicide. It was the appearance of Hanata Jingzi and her daughter that ignited his interest in life. Since then, for the sake of love and gratitude, he has made the choice of sacrificing himself again and again to protect Amethyst Huatian.