Kibamaru Gekienken, the Fierce Flame Sword, serves as a Flame Mononofu Hunter. He possesses brown hair styled with an anti-gravity quality, often tied in a ponytail, and striking red eyes, complemented by a distinctive scarf.

Emerging 1000 years after Princess Mikoto's era, Kibamaru existed when hunters were universally sealed into cards following a significant past incident. His liberation comes when the protagonist Hagan inadvertently swallows the Goddess Drop, gaining the magical energy required to break the seals. This action frees Kibamaru and temporarily restores the powers of other hunters.

Functioning as part of Hagan's core team, Kibamaru unleashes fire-based combat techniques. His role extends beyond battle; he collaborates to confront antagonists like Goda under Digras's command and engages in strategic battles against figures such as Nasha. Early interactions reveal initial reluctance to fully trust Hagan, evolving into steadfast loyalty as their journey progresses. Kibamaru's combat proficiency proves instrumental during critical encounters, including efforts to free corrupted entities like Clara, the Moon Angel, from Gort's influence.

His development includes forging new alliances, notably with former minor adversaries Mekki and Shakki, who become comrades in later story arcs. His narrative trajectory emphasizes maturation through shared trials, reinforcing his position as a dedicated protector within the group dynamic.