Shuichi

• Hometown: Uekawa, Llania
• Family: 4 members, upper-class
• Shuichi's older brother, Hikaru, a pacifist and human rights activist with a soft spot for Peasant children, takes a little girl into his home and introduces Shuichi to Hisao, who he is tutoring. When the little girl takes seriously ill and passes away, then Hisao falls sick, too, Hikaru disappears from Llania never to return.
• Wanting to follow his brother's example, Shuichi helps Hisao out and teaches him the Surika Aite. After Hisao is killed, Shuichi and Reka become friends.
• He is unwillingly drafted into the Llanian Guard and sent out to the Kaita village as a spy. Unfortunately, in the course of the mission, Shuichi is seriously injured.
• Afterward, he is confined to his home and works undercover with Hijiri Tachibana as a double agent.

Katsushiro

• Hometown: ?, Somari
• Family: 3 members, upper-class
• Katsushiro has been friends with Shuichi and Daisuke since before they met Hisao.
• He is also unwillingly drafted into the Guard and goes with Shuichi on his mission. He wrestles with feelings of guilt for letting Shuichi get hurt protecting him.

Daisuke

• Hometown: Kurosaka, Llania
• Family: 3 members, upper-class
• Daisuke is thrown into the same camp -- a recruting ground for the Guard -- as Shuichi and Katsushiro. Later on, he and Katsushiro are both forced to fight against the Keyholders.