Kobayashi-san Chi no Maidragon: Ilulu wa Koi Toka Wakarimasen!

When Ilulu came to our world, she had plans for chaos and destruction! And now? She’s working at a candy shop with the owner’s teenage grandson, Taketo, as her supervisor. But Ilulu’s sense of humor and lack of knowledge for the human world, combined with her busty—er, boisterous personality—makes things quite difficult for Taketo, a simple, growing young man who just so happens to suffer from the occasional nosebleed.
(Source: Seven Seas Entertainment)