Born to Kitsu Sho and Kitsu Harumi, Tomoyo's parents served dutifully if not spectacularly for the Lion clan all their lives. Much like his ancestors before him, honor has come before glory since before Tomoyo's birth. Bigger than other boys in his youth, Kitsu Tomoyo has been encouraged to take to the field of battle more so than other Kitsu brethren.

As he trained as a field medic, his eagerness to prove himself was soon split in half by reality. To save the Lion's honorable samurai, to heal, Tomoyo has a fondness of. Battle unfortunately, may not be Tomoyo's favored environment. His first years in service of the Lion clan in a number of border disputes both elucidated and saddened him.

Tomoyo is a broad figure, with a long mane of red hair characteristic of the Kitsu family. His constant exhaustion is poorly hidden by a veneer of composure. While he might appear terse, speaking to him might reveal that he is not stoic, but rather solemn. Black and yellow often adorn his outfits, but they are otherwise unspectacular.