The protagonist is a Chinese man in his forties. In his youth, he loved to fight and spent time in prison out of loyalty to his brothers. After his release, he relied on help from friends and relatives and planned to open a martial arts school. But then he was in a car accident and was reborn in the body of Hirano Hiroshi, a Japanese high school student who was regularly bullied by the school's resident tough guys. One day, he was beaten again. Xiao Zhi woke up to discover he had been reborn. At first, he was thrilled, thinking he had a chance to turn his life around. But then he realized he had been reborn as a Japanese man, and an evil plan began to take shape in his mind.