Yasunori Kai is a fictional character from Crows and its related franchise Crows x Worst. He is a delinquent associated with Suzuran High School, one of the series’ central battlegrounds, where rival gangs and tough students compete for dominance. Kai is portrayed as a supporting character within the larger cast, contributing to the school’s rough atmosphere and the ongoing conflicts that define the story. His presence helps reinforce the series’ themes of loyalty, strength, and survival in the world of juvenile delinquency.