Rikimatsu Ariko

__Height:__ 185 cm (6’0)
__Likes:__ Hazel grouse
__Dislikes:__ Shark

Ariko is a Private First Class of the 7th Division and an Ainu.

As an Ainu, Ariko is knowledgeable in some of their customs, such as knowing where secret hot springs are located and being able to instantly recognize Ainu clothing. As a boy, Ariko entered a mine in Penkeyu during wintertime and explored it enough to find several exits within.

Ariko was one of the members of the search and rescue groups on Mount Hakkoda where they helped to rescue members of the 5th Infantry Regiment that had gotten lost on the mountains.