Hindun, known as Kudun in Japanese transliteration, commands as Marshal of the Mongol invasion forces assaulting Tsushima Island in 1274. He leads a combined Yuan dynasty army of Mongol, Goryeo, and Jurchen troops, directing critical tactical operations against the island's defenses.

Facing Tsushima's defenders—primarily exiled samurai and local clans—Hindun confronts unexpectedly ferocious resistance. The exiles' relentless combat prowess, including their capacity to fight on despite fatal injuries, reportedly undermines his morale. This tenacity provokes his apprehension about encountering more such adversaries if the invasion advances toward mainland Japan.

The character's name originates from historical Mongolian figures linked to Japan's invasions, though his portrayal remains fictionalized within the narrative.