Kobayashi-san Chi no Maidragon

Summary

What happens when a drunken promise leads to living with a dragon? That’s Miss Kobayashi’s new reality when Tohru appears in her life. With a maid-slash-dragon in her home, she’s experiencing a whole new level of domestic bliss! But the dragons don’t stop there. On a mission to find Tohru appears Kanna, a little dragon with a big attitude. Before she knows it, Kobayashi’s got a house full of dragons—one serving tail and the other serving serious moe! Together, they live side by side with only the occasional disaster…well, maybe. But nothing beats coming home to the warm welcome of a dragon maid!

(Source: Funimation)