Kibito serves as a bushi for the Yomogawa family, initially stationed at Aragane Station. He is a physically imposing figure, standing 1.95 meters tall and weighing 90 kilograms, with dark blue hair and brown eyes. Among his fellow bushi warriors, Kibito maintains a reasonable, approachable demeanor and shows notable friendliness towards Kabaneri hybrids, setting him apart from peers who often distrust such figures.

He maintains a solid friendship with fellow bushi Kurusu, serving alongside him in Lady Ayame's guard detail. During the conflict at Aragane Station and subsequent events on the Koutetsujou, Kibito fights in defensive actions against kabane threats. His combat effectiveness increases when he later receives reinforced ammunition capable of piercing kabane heart cages more effectively.

In The Battle of Unato, Kibito remains with the Iron Fortress crew, contributing to the alliance's campaign to reclaim the Unato region from kabane forces. He actively participates in combat against the fortified kabane presence there.