Eiji Yamagami (山神英二: mountain god, great second son)

Is a genetic chimeric twin. While he looks normal, he has a larger than average kakuhou, which produces 2 types of bikaku kagune: one very robust one capable of blocking hits/blunt force trauma, and one that is much more delicate in constitution for detailed work. Because of this, his metabolism is higher than average, which requires him to eat about once a week (comfortably more, but one week is stretching it and two weeks is dying).

His alias is "Nekomata," from his two seperate bikaku. He fittingly uses a cat mask (a cheap one he got at a local festival stall and never threw away). He hunts in his gakuran, since they are uniform between schools, since he just has to take off the collar pins (He's really good at washing out blood stains lol). He generally hunts as an ambush predator: his high metabolism and less affluent parents made for a harder time getting enough food, which makes him a pretty small teenager. He looks small and unassuming and his foreign background gives him enough exotic flair to make him look "pretty" and "meek." He uses this underestimation to his advantage, getting in as close as possible before unleashing his kagune, using his heavy bikaku to shield his body from possible attacks, and uses his light bikaku to delicately pierce his prey for a quick and clean death.

His grandmother(father?) is a foreigner, so he has brown hair! (He gets in trouble at school for it, but it's actually natural; sucks to be him). His higher than average appetite pushed his parents to join in the rat race for territory in the new wards, but his parents never came home from hunting one day, and was suddenly left to fend for himself. Since their bodies were never found, no one was ever notified, and he attempted to feed himself (learning to hunt, going to school, doing his homework) for a month before he slipped and almost attacked a classmate. Terrified of himself and of being caught by the newly made CCG, he ran away and lived on the streets, however his failure to show up for school was noted and after his house was found empty and abandoned, his family was contacted. After about a week(?) of trying to survive by himself on the streets, his uncle(? cousin?) picks him up and raises him.