Rikka Kitan

Touma, a young wolf beastman who loves a peaceful life, is a regular policeman who protects the peace of the town of Edo. One night, he meets a mysterious girl who is being attacked by thugs. The girl's name is Rikka. She is a princess from the faraway country of Izumo, and is being pursued because she has a big secret. Touma happens to help her and ends up hiding her. Tired of her life on the run, Touma decides to offer peace to Rikka, but living with a girl for the first time is far from peaceful and marks the beginning of a very turbulent life!

(Source: Kodansha, translated)