Manga is called Mister Matross's Dragon Loli

Before you get your panties all in a bunch the "girl" is named Kanna and she is actually a 6,000 year old dragon, so that's perfectly legal.

This is a doujin based on Kobayashi-san Chi no Maid Dragon it's a really great anime if you like Moe shit.

I'm pretty sure that I am now on a watchlist.