8 XXX : HENTAI_GIF

Kangoku Senkan
Like /u/erpegowiec said, it's Kangoku Senkan. If you like this show, I'd highly recommend Taimanin Asagi: story and characters are made by the same game company, and the animation is also made by the same people. It has a bit more focus on monsters and such, but it is incredibly good. The one off episodes of Night Shift Nurses also have the same animation style. The names of those are Nanase Ren, Kazama Mana and Yagami Yu. All good stuff.