Along with the fact it has to be anime related.

Upload Guidelines
Please keep the following guidelines in mind when uploading something. Consistently violating these rules will result in a ban.

Do not upload furry, yaoi, guro, toon, or poorly drawn art
Do not upload things with compression artifacts
Do not upload things with obnoxious watermarks
Group doujinshi, manga pages, and similar game CGs together
Read the tagging guidelines
Only wallpapers, or images fitting the screen (4:3, 16:9, 16:10) NOT vertical.
Scans should be (almost) clean of text on top of the image
Minimum resolution is 1024x768