Gai Tsutsugami

Birthday: January 9, 2006.

At his young age,​ he is the leader of the group, "Undertaker". He has great physical strength and pilots the Jeet Kune Do. He has a lot of charisma and is Shu's rival. He guides Shu who has the "The Ability of King" and aims for a successful revolution. He hopes to push the revolution to success with the help of the "power of kings". He has the power to see people's Voids. His everlasting dream was to save Mana (Shu's older sister, Eve of the New World) from the Virus, thus releasing her from pain. He even says it several times that his reason for fighting is "for a certain woman".