Daiya is the leader of the fifth platoon. As an elite four-year veteran of the Eastern Battlefront, he has earned the personal name Black Dog. He and Anju have been in the same squadron since they were conscripted and are close friends.

Spoiler

When his Juggernaut is surrounded by Self-Propelled Mines, moments before they detonate Daiya whispers Anju's name. He is mortally wounded in the explosion and is later euthanised by Shin, so that he won't be assimilated into the Legion.