maybe you would like :
Bio-Boosted Armor Guyver
i would say Trinity Blood or D.Gray-man are the closest to 07 Ghost.
xxx holic - not a hentai
You might really like code geass in that case
I'd try Nabari no Ou.
Miharu is the holder of a special power within the Nabari (or ninja) world. He's a very anti-social, no emotions kind of kid until he finds this out and meets Yoite, a "kira" user who wants Miharu to use his power to erase his existence completely. This gives Miharu meaning, and he tries everything in his power to help Yoite. Miharu has to constantly escape from the Kairoshu, a hidden village that wants to use his power, while his friends help him, but disapprove of his friendship with Yoite.
In the end, it's all about Miharu's ambiguous friendship with Yoite, and how having someone in his life that feels the same emptiness as he does makes him want to save that person above all else.