Takeo was born as an only child for six years he longed for a brother whom he could brag to and teach advanced jutsu to. He eventually got that wish and got to spend several years with his brother Teru Kagami. All was well until Teru and Takeo's parents were killed by the power of an unknown force(later reveled to be Ryuuk the Death Dragon). Takeo wanting revenge traveled the world to know more about Ryuuk leaving Teru with his cousin and lots of babysitters. He eventually met Ryuuk and somehow nearly killed him but realized that by settling for revenge all he got was hatred from his brother.He vowed to never tell Teru what happened in order to keep him going on the same path as Takeo went.