Karakuri Ninja Girl

Fawn Bell and Moon Shadow are young ninjas that long to get away from the Ninja Kingdom, and live together like a normal couple in the city. After their unusual banishment from the Ninja Kingdom, they begin their everyday lives in the city, working, shopping, and other "normal" activities. However, Fawn Bell's past comes back to haunt her in the form of Morning Mist, who is attempting to get between the young couple, in order to bring Fawn Bell back to the Ninja Kingdom with her.

Super sadly this is the only one of its kind