Ookami Heika no Hanayome

Synopsis:

After learning about a position with a greater salary, Yuurin, the daughter of a low-ranking government official, visited the royal palace. That role, however, is to play the role of Haku Reishou's bride, who is feared to be the cold-blooded and vicious "His Majesty, the Wolf." After discovering His Majesty's secret, Yuurin finds herself trapped as his temporary bride in the conspiratorial royal palace.