Comment on Niiro and Kay Commission by yuumei

I'm glad you like the characters, but I'm sorry, but these are my original characters that belong to a book I've written. Even if I did not make the picture, I commissioned for it, and the characters belong to me. It's nice to know they inspire people, but I don't think it would be appropriate for you to use this picture for your novel cover. I would not agree to it seeing they are my oc's. It's not to be difficult or anything, but I just thought I'd let you know that Niiro and Kay are already taken ^^ (at least these two )
I don't own the names or anything of course, just the characters, so I'm sure you can still use the names in your novel, but just probably not this picture as a cover ^^