How is this tag here if there's absolutely nothing?

How is this tag here if there's absolutely nothing?

Not sure, but my guess is that there was a Suika x Tenshi doujin or image posted here before, but it got taken down for some reason. Maybe because the original artist asked the site to remove it or something like that.

It's also possible that I or someone else intended to upload a doujin or image of it, but never got around to it for some reason. Has happened with a few pairing names.