Kumokiri had short black, a left eye that has a white iride and a dark sclerae, and wore the standard Iwagakure shinobi uniform, which was a black robe with long sleeves that are frayed, a black tattsuke bakama, and a white sash tied at the waist. He also wore a mask.
Kumokiri followed the shinobi's rule of conduct, which is to follow the orders given to him by either his employer or the people overseeing the mission no matter what he is ask to do, even stating that he was willing to offer his own life if ask to do so, which was proven when Yamada Asaemon Kiyomaru ordered him to kill himself before he had a chance to set foot on Kotaku.
At a young age, Kumokiri was placed among the other young candidates to become the next "Gabimaru the Hollow" of Iwagakure. He soon completed his training and was classified as an elite shinobi.
During one mission, Kumokiri and the other elite shinobi were led by Gabimaru to retrieve a ledger from a Temple Commissioner. The squad completed the mission but were oddly ordered by Gabimaru to only knock the men unconscious and not cause any bloodshed. Kumokiri begins to notice that Gabimaru has been acting strange in that he has stopped killing his enemies on his missions and believes that it was because he was married to the chief's daughter. The other shinboi also begin to question his behavior but are told by Gabimaru that he has not changed. Later, the squad is assigned on another mission to kill their previous employer and his wife. However, after Gabimaru refuses to finish them off, Kumokiri watches as the shinobi attack him. Shija becomes outraged by their actions but is informed by Kumokiri that they were carrying out orders from their chief to test Gabimaru's worth as a ninja. In the end, the two watch as Gabimaru kills the ninja and allows the employer and his wife to walk freely.
Lord Tensen Arc
After the shogun hired Iwagakure to capture the Elixir of Life from a mystic island, Kumokiri, the other elite shinobi, and a squad of fifty genin were assigned with a secret mission by the village chief to eliminate Gabimaru, who has joined the first expedition team. While departing, the shinobi became obedient to the four Yamada Asaemon who were put in charge of leading the ninja.
While departing, Yamada Asaemon Kiyomaru boasts about his abilities compared to everyone on board and looks towards Kumokiri to demonstrate. Kumokiri says that he is willing to act as his dummy and sees him swings his sword but notices that his attack was directed towards Shija's mask. This results in Kiyomaru getting into conflict with Yamada Asaemon Isuzu for his actions towards the ninja in serve. Kumokiri assures them that she should not worry about them since shinobi are viewed as pawns towards their master and states that they are free to select any one of them to be thrown overboard or killed to lessen their doubts. Wanting to see how far his loyalty went, Kiyomaru ordered Kumokiri to kill himself. Kumokiri gladly accepts and passes on the leadership position to Shija. He then uses one of his swords to stab his neck while giving a chant, fulfilling the order he has been given.
Abilities and Powers
As one of Iwagakure's elites, Kumokiri was a shinobi of higher caliber and had authority over the low-ranking genin.
- Kumo (雲) translates to "cloud" and kiri (霧) translates to "mist". Roughly translating, "Kumokiri" literally means "cloudy mist".