Yamada Kaito, the youngest son of a feared Yakuza boss, was born into a world of crime, power, and legacy. While his brother Renji was molded into the perfect heir, Kaito found his escape in video games. With the support of his mother who wanted at least one son to live freely, he was allowed to pursue a normal life, far from the violence that defined his family. Protected by bodyguards and hidden behind a screen name, “Kai”, he rose to fame as a top-tier gamer and streamer.