Koji Kashin

trhwith his abilities being viewed as superhuman. He was able to easily overpower and defeat one of Konohagakure's top jōnin. In the anime, he was viewed as a very troublesome opponent by Kakashi Hatake. He appears to be among the stronger Inners, as he easily defeated and killed Victor and was confident he could defeat Delta. Even Isshiki Ōtsutsuki himself acknowledged Koji as a very capable man. He was capable of killing Isshiki's vessel trhd, and still had enough strength to summon a toad to escape. Likewise, Koji has tremendous chakra control, able to perform techniques with only a to use the Rasengan, easily matching Konohamaru's own usage, and can even use the Ultra-Big Ball Rasengan. He is very knowledgeable of other trhging from summoning tiny toads that act for surveillance, act as a medium for his techniques, giant toads to crush targets, and also perform the \ and sensory perception to the point of being able to catch a strike from Isshiki and temporarily keep him at bay before quickly countering. His ninjutsu is also enhanced, able to use techniques such as Sage Art: Five Fire Gods' Fan of Flames, to the point of temporarily pressuring and surprising Isshiki with the overwhelming amount of flames. YOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO WHAT IS THISSSSSSSSSSSSSSSS AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHJGDJGDJDGSGSJGSJHTRTK4T4NP BWHTR2

Versus Momoshiki Arc
In the anime, during the days leading up to the Chūnin Exams, Koji ambushed Katasuke Tōno to find out who was stealing data for Kara using genjutsu on a scientist. Having learned that Momoshiki Ōtsutsuki was defeated, he assumed Naruto Uzumaki was the person responsible.

Kara Actuation Arc
In the anime, Koji was present when Jigen called a meeting with the Inners, informing them of the destruction of one their facilities in Amegakure set by an Outer.

Ao Arc
As a part of a secret plan, Koji and Amado conspired to betray Jigen and ultimately kill him and Isshiki, and caused the airship transporting the vessel to crash. Upon their organisation losing their vessel, Koji discusses the matter with the other members of Kara. Immediately after their meeting, Koji approaches fellow Inner Victor, to assassinate, and mocks him for not noticing his presence. After impaling him with a kunai, Koji incinerates the man under Jigen's orders to punish Victor for conspiring against Kara, before thinking about Konoha. Shortly later, he approached Ao on the Thunder Train, and instructed him to retrieve the vessel Kara lost, and provided him with the weaponry for the mission. After Ao fought Team Konohamaru during his search, Koji approached him, and questioned Ao's resolve to fight fellow shinobi again. Stating his compassion has long since gone, Koji was content with his answer and warned him about their enemy preparing an ambush for him before departing.

Having watched Boruto defeat Ao, Koji summoned a toad on top of the pair, which crushed Ao to death. Refusing to enlighten them about Kara, he paralysed the team using fūinjutsu. Overcoming the technique, Konohamaru Sarutobi faced Koji alone, during which he attempted to strike Koji with his Rasengan, prompting Koji to counter it with his own. Complementing his opponent on his skill, Koji engulfed Konohamaru in flames, which triggered Boruto's Kāma activating. Shocked to see it, Boruto subconsciously absorbed Koji's techniques. Thanking Boruto for showing him it, Koji decided to leave, before complimenting Mitsuki for stopping Sarada Uchiha from recklessly pursuing him.

Kawaki Arc
Shortly after, Koji observed Team 7 making contact with Kawaki, before being joined by Delta. Realising she didn't have faith in him recovering the vessel, Delta informed him that she invited Garō to partake in the mission. When Boruto revealed his Kāma to Kawaki, Koji questioned what would happen next. After Kawaki killed Garō and fainted from overheating, Koji convinced Delta against getting rid of the Konoha-nin and retrieve Kawaki then and there, feeling that Boruto having a Kāma merited further observation before taking action, also arguing that the crash blimp made it inevitable that the world would learn about Kara before bowing to their power. Later, Koji and Delta arrived at the main gates of Konohagakure to retrieve Kawaki. While Delta stated that it would be difficult infiltrating, Koji told her to stay put before entering the village without setting anything off and began searching for Kawaki. Once inside, Koji summoned a small toad to find Kawaki, who he eventually found taking shelter in the Seventh Hokage's home. Deciding it was too dangerous to engage Naruto Uzumaki, Koji decided to continue observing for the time being.

He watched as Boruto and Kawaki make the Seal of Reconciliation, and Boruto was taken aback by a vision, an event which also made him instantly heal his hand. Koji was greatly intrigued by this, wondering if it was a byproduct of the Kāma and worried if Jigen had the same ability. He then noticed Delta propelling herself through the village and to Kawaki, noting how out of control she is. After Delta was defeated by Naruto, Koji praised Naruto's strength but noted not even he could defeat Jigen, considering the Kāma, like the one in Boruto's hand the only way to do it. As Koji continued to monitor Kawaki, he expressed concern on how it had been a while since Delta had been defeated yet Jigen had still not made a move, believing it to be unlike him especially as he had definitely learned about Boruto's Kāma and Naruto's personal protection of Kawaki from Delta. To his shock, Jigen teleported to Kawaki's location through the Kāma he gave him and wondered if he could do that anytime then why would he assign a mission to retrieve Kawaki in the first place. As Jigen sensed the presence of Koji's toad, Koji dispelled it as he realised from the beginning Jigen had suspected him and had been baiting him to learn his true motives, rather than Koji probing Jigen's movements.

In the anime, Koji snuck a toad through the portal to continue watching the fight. He watched as Naruto and Sasuke were able to pressure Jigen to go all out and despite their defeat, Jigen's body was overtaxed and breaking down. Later, Koji was approached by Boro via genjutsu. He revealed to Koji the spy toad of his that he recovered from the crashed airship, accusing Koji of being the traitor. Koji however did not deny it was his toad, explaining that Jigen suspected trouble during Kawaki's transfer and had Koji keep an eye on things. He also noted that Jigen had recently entered the village and spotted Koji, yet did nothing to him. As Boro accepted Koji's explanation, annoyed at hitting a dead end on his investigation, he ended the communication as he was contacted elsewhere. Later, Koji snuck into a village archive, looking for data. However, the archive's digital files only went as far back to after the Fourth Shinobi World War. Older data remained only on physical scrolls in another site. Koji began manipulating the Konoha-nin into thinking he was trying to escape while making his way to the other site. His efforts were thwarted by Kakashi, who saw through his deception. He forced Koji to retreat, deciding the scroll was not crucial to his plans.

Later, Koji decided to return to the base. Upon arriving, he learned from Amado that Jigen was still not even at 10% capacity. Also learning that others Inner were not at base, Koji decided he would use this opportunity to kill Jigen. Amado collected the essential for him to continue his work, and Koji summoned a toad. Delta arrived, intent on not letting them leave without Jigen's permission. Koji offered to deal with her, but Amado merely issued a shutdown command, making Koji wonder if his modifications contained similar measures. Koji gave him directions to follow, and reverse summoned his toad, with Amado, to the outskirts of Konoha, and proceeded inside the Kara facility. As Koji approached Jigen he secretly had a small toad act as a camera to relay the discussion to Amado. Quickly the discussion became tense, as Jigen revealed he knew that Koji and Amado sabotaged the blimp, letting Kawaki escape. As he asked Koji what his true goal is, Koji attacked him, proclaiming he was created solely to destroy Jigen.

Jigen called him a tool for dedicating his life to one job. Koji however, weaving a hand sign, stood resolute, proudly declaring it as the way of the shinobi. Once luring Jigen into his trap, Koji summoned a massive wall of flames, knowing that the Kāma could not absorb naturally occurring flames void of chakra. With the flames finally killed Jigen, forcibly activated the final stage of his Kāma, making Isshiki from inside of Jigen resurrect himself through his vessel. As Jigen was not fully compatible as a vessel, Jigen's was reformed as an imperfect recreation of Isshiki. Isshiki used his boost in power to instantly shrink and disperse the flames. Eventually, Isshiki's assault destroyed Koji's mask, leading Isshiki learning of his identity. Struggling, he activated Sage Mode. Upon realising that Sukunahikona required seeing a target, he managed to catch Isshiki off-guard with his Ultra-Big Ball Rasengan. Isshiki used Daikokuten to summon massive stones that crushed Koji's left arm and flank. Realising he could not win, Koji summoned a giant toad, which swallowed him and teleported away.

Trivia

 * Koji Kashin shares his name with a folkloric magician believed to have lived in the late Muromachi period, though his historicity is debated. He is often depicted as a white-haired, bearded, elderly man in robes, and is said to have used his illusions to deceive and defraud prominent rulers such as Oda Nobunaga.
 * In the manga, Koji assassinates Victor without a known reason. In the anime, it was an order from Jigen for Victor's unauthorised actions in the Land of Valleys and for betraying Jigen and copying the Vessel's data from Kara's databanks.