Quote from XxKumagoroXx
About Toogu Kasuga, you can imagine she probably is Shizuma's sister. I don't remember well since it's been a while since I've read chapter 39 but I can assume that Kasuga is relaed to Shizumasa.
Haine's real father is the guy who adopted her because her mother had an affair with him so that's why her "fake" father, Kamiya, didn't like Haine. Kamiya isn't her real father (the guy with the black hair), instead her father is the her "fake" one who adopted her. Yes, it's quite confusing to explain the story but I would suggest you go back and read before advancing on.
In Tanakari's case, he's a "shadow" and apparently he has no siblings (I would believe he doesn't).
coool! thank you! i get it now.. and yea.. its getting really confusing >< too many characters ><