Role in Discord ArcEdit
He and his brother Koichi Kimura went down the streets. They heared somthing. they hide themselve in fear. Wrat was on the hunt with Sloth. Koichi tried to sneak up to Koji, but Wrath caught him. Koji ran from hiding to safe hi brother. Wrath killed them.
Koji has long black hair, which is pulled in a ponytail, that is covered by a blue and gray camouflage bandana, and he has dark blue eyes. He wears gray pants that end at his ankles with long blue socks and white and blue sneakers, a yellow shirt under a blue jacket with yellow stripes.
Koji was the child chosen to wield the Spirits of Light. Koji starts the series as the group loner, but gradually warms up to the other children. Koji receives Ophanimon's cell phone message while he was out buying flowers for his stepmother. He followed the instructions on the SMS, which led to a subway station where a Trailmon took him to the Digital World.
Koji travelled alone until he met Tommy Himi and J.P. Shibayama and had to save the two from a horde of attacking Pagumon. From then on, Koji showed up to help the other Digidestined from time to time, and then eventually joins the group permanently.
Koji also meets his twin brother, Koichi Kimura, for the first time in the Digital World. Koji's parents had split up when they were too young to remember each other, and his mother had moved out with Koichi and their grandmother. Koji's father remarried, told Koji that his mother had died, and never informed him of his twin brother. As such, Koji grew up never knowing he had a brother, let alone a twin. But he missed his birth mother very much (not knowing that she was actually still alive) and he would constantly look at a photograph of her that was on the backside of a framed picture containing his current family, something his father seemed to disapprove of. Despite his stepmother's kindness and the fact she genuinely cares about him, he had a really difficult relationship with her, not willing to accept her presence in his life. He actually finally decided to accept her as his mother on the same day he would unknowingly be sent to the Digital World, ordering a bouquet for her and his father's wedding anniversary and making the decision to call her "mom". When he and the others returned to the Real World, he was able to fulfill his task, graciously presenting his wonderfully surprised stepmother some flowers. He was also later reunited with his birth mother with the help of Koichi.