Imma have to say.. SilverXLink . Do it the fact that Chain is in the perfect spot to be a BFF/brother type character. :D And still loving the story, keep at it!
This is a cool story. And I can tell you what kind of Angel Chain is. He is a Shadow Demon. I know it sounds demon but actually Shadow Demons are more pure than regular angels but are easily discriminated against because of the fact that they look dark and evil. They are actually kind and gentle, and Chain reminds me of that.