Peter Shyrain was a Remonian warrior who managed to gather intel on the Yamatian fort prior to the Battle of Folsworth Woods and befriended Rune. He ended up fighting against Corporal Kimitake Paizuri during the battle but was mortally wounded in the process. He realized in his last moments that it had been Rune who had intentionally wounded him and Paizuri in order to cover up some dark secret.