This is quite subtle fan service.
Any art image you find from Megami Magazine or Nyantype Magazine, be sure to add them there, too. Sonata, I added some of pics such as Queen Blade to those galleries.
This is from Nyantype #41.
Nyantype is a monthly anime magazine packed with posters of official artwork featuring characters from popular and upcoming anime.
The apes are kinda angry and are thinking they want a planet all to themselves.
Submissions can take several hours to be approved.