Species: Human
Occupation: Jujutsu Sorcerer

He is a jujutsu sorcerer from the past who was incarnated by Kenjaku to participate in the Culling Game as a player.

Ryu is a classic hotshot that both men and women admire. In his past life, he enjoyed both a good fight and the company of ladies. Even though Ryu has no regrets, he likens his previous life to a "moderate eater" with no "dessert" to satisfy him. Ryu intends to use his second life to seek a worthy opponent to fulfill his insatiable hunger. Despite his persistent desire for combat, he appears calm and rational. Yuta further speculates that his point score in the Culling Game is a result of Ryu's choice not to target ordinary citizens but also his indifference to their deaths due to collateral damage in his fights.