I don't think this warrants the team_fortress_2 tag. The [Spy's] butterfly knife is rather generic looking, so can't necessarily be connected to TF2 all the time. I'm just going by "tag what you see," so I'm removing it. If someone with any authority thinks otherwise, go ahead and revert the change, that's just my own judgement.
P.S. I don't know the moonrunes, so I'm not sure if the picture originally has a TF2 tag, and I'm not sure whether or not Danbooru protocol would shift for that.
The source link seems to be wrong (or I fail as usual in finding sauce); all I see are Madoka Magica pics. But since all of those are unlabeled, it's probably safe to say this one doesn't have a TF2 tag.
I'm going to try to provide a bit more information on this picture. Please bear with me since this is my first time commenting. (Of course I looked at the guide heh.)
I requested this picture sometime around 2010 and it was finished on 8/10. Provided that I saved the picture around there when it was done. At the time there were barely any yandere Teto pictures around, saying that I don't know if the yandere tag can be applied to the picture since it was intended to be yandere.
As for the TF2 Spy's knife, my guess is that he played a lot of TF2 at that time and wanted to draw it in.
There is no longer an up-to-date source link for this image, as it was posted on Hangaku's old blog that was deleted and remade in favor of his current one. It is however, technically correct as it is still the same blog.
