I don't know which doujinshi this is from, but it is definitely the character Inui Sadaharu from Prince of Tennis. Probably a crack yaoi or shonen-ai doujin because, as far as I know, a beyond teammates relationship was never confirmed by the creator for the characters of Inui Sadaharu and Kaidoh Kaoru. The situation depicted here is Inui is trying to bait Kaidoh with his greatest weakest, felines. How would you handle this situation, indeed? I foresee a world of hurt in Inui's future for distressing the poor creatures.
*Ah, I found a link to information for the work, it is a doujin and, it is Inui/Kaidoh from Prince of Tennis. Sorry it's not canon. I thought I'd better check that it was Kaidoh that Inui was trying to tempt, not the series main character, Ryoma Echizen, who also has a great affection for felines. Dur, yeah, link: http://www.mangaupdates.com/series.html?id=33100