What is the name of the manga in the bottom right of this picture? I was reading chapter 244 of Magi manga, and a picture on the bottom right of the magazine cover caught my interest. I am trying to figure out what manga/anime it belongs to.
I have reverse googled the bottom right corner of the picture to see if I got any results with the dude there. Closest I'm getting to the answer is the website of Shounen Sunday [archive.org on 2014-12-30]

If you scroll down a bit, you can see him sitting there. Searching for the title 闘獣士 on mangaupdates reveals that it is Toujuushi.

The cover says that it is the serialization of the 3rd episode of the story, which matches the description on mangaupdates.