Bonkura Onmyouji no Oniyome

Supporting her husband in mysterious incidents and battling her hateful mother-in-law at home!? A story of a demon-slaying working wife!

Due to unavoidable circumstances, Nozaki Seri loses her home and enters into a contract marriage with a passing onmyoji, Kitamikado Koga, to make ends meet. However, while Koga has cute turtle and tiger shikigami (spirit familiars), he's a dim-witted onmyoji with no magical powers whatsoever...!?

(Source: Kadokawa, translated)