Okay according to K Project it does not say weather or not Neko loves Shiro in a romantic way. Though you do get to see how Neko lovez Shiro as a pet type of way. Cause Neko is a cat who turns into a human. Of course you may already know that. There is fan fic articles and videos for Neko X Shiro. Take a look at this video. Copy and past the link into the search bar at the top of the page.
link and copy and past the link for the Shiro X Neko fan fics.
link Also the picture shows Shiro standing on the right side of the picture. While the left side of the picture is Shiro laying in bed while Neko is turned into a kitty cat and not a human at the moments while laying on Shiro's arm in bed. :-3