Jimmu is the son of the Tennos: the two lead Artificial Intelligence (A.I.) scientists on Project: N.I.O. Jimmu has inherited his parents' inventive genius, but is sorely lacking in self-restraint. After Nakamura Kembei decided to have Jimmu's parents murdered, Okiku Tenno was able to program N.I.O. Prime to defend Jimmu at any cost.