Koji Minamoto is a main character in the Digimon anime series "Digimon Frontier". In this series, a group of chosen human children were given the ability to turn into digimon.
Koji was the child chosen to wield the Spirit of Light. Koji starts the series as the group loner - a kid who wanted friends, but never had the chance to make any because he had to change schools too many times. 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 and J.P. and had to save the two from a horde of attacking Pagumon. From then on, Koji showed up to help the other Digi Destined from time to time, and then eventually joins the group permanently. He often distances himself from the others, refusing to let anyone get too close to him. This was revealed to be because he moved a lot, and believes that no matter how close two people can get, something pulls them apart, so he stops trying to make friends and be, as he puts it, 'better prepared for it.' Originally, he is rather cold and rude towards the other DigiDestined, but eventually softens up as he becomes closer to them.
(Source: Wikipedia)
