Chisaki Kai, better known as Overhaul (オーバーホール, Ōbāhōru) in the official English translation, is a villain and former leader of the Yakuza gang known as "The Eight Precepts of Death". He is the main antagonist of the Internship arc. Kai is a young man of slender build with short, burgundy hair, small eyebrows, and small eyes with golden irises. After encountering the League of Villains, he acquired a small, barely noticeable scar on the left side of his forehead from a scuffle with Magne.