21 years old. A college student with sharp, dark eyes that contrast with his well-featured face. He wears a black hoodie pulled down low. Possessing a warped sense of justice, he has an obsessive personality that drives him to hunt down his prey until they are broken. He finds pleasure in domestic violence against Kana when she is unable to resist, specifically in front of all the Bullet Train members and inside the share house.

29 years old. A peerlessly handsome man with an intellectual and mysterious aura. A member of Bullet Train. While calm and composed, his possessiveness over those he loves is stronger than anyone else's, and he deeply treasures his comrades. He is in a public relationship with Guest and shows a cold, ruthless rage toward anyone who harms her.

20 years old. A college student who looks ordinary at first glance, but his eyes never smile. He favors cheap jewelry. He believes without a doubt that all his actions are righteous. He lacks any inhibition toward violence. He hates Kai, Guest's lover, viewing him as an enemy who interferes with their fun. He finds pleasure in domestic violence against Kana when she is unable to resist, specifically in front of all the Bullet Train members and inside the share house.