Kakui

The record reveals little of Kakui's temperament, but his final act speaks for it. Unwilling to watch Omoi be killed under interrogation, he and Marui surrendered the location of their target to spare their comrade.

Kakui is a competent hand with a blade, able to fold in a Lightning Release: Shadow Clone Technique alongside his kenjutsu.

When word spread that the First Hokage's cell had been taken from Konohagakure, the Fifth Raikage dispatched a three-man cell, Kakui alongside Marui and Omoi, to bring it back. Arriving at the scene, they learned that Sakuya, who had held the sample, was dead, and that Leaf shinobi were being blamed for the theft. Omoi's squad tracked down the accused, but before blows could land Omoi picked out Konohamaru Sarutobi, who laid out what had really happened. Piecing it together, the two groups concluded the real culprits were the Haze Quadruplets out of the Land of Haze and joined forces.

On the way they were cut off by Deepa, who was hunting the same Hashirama Cell. Omoi's team engaged him so the Leaf ninja could push ahead, but nothing they attempted left a mark; his body shrugged off every strike, and Kakui and Marui were beaten down, leaving Omoi to fight on alone. Once Omoi too was overwhelmed and pressed for the cell's whereabouts, Kakui and Marui recovered and, refusing to let their comrade die, admitted the sample was headed for the Land of Haze. Deepa answered by driving his hand through both their chests, killing them.