Jobourei - Itsuwari no Hanayome

At the turbulent time of the emperor's death, there were no imperial princes who held in their possession the golden medal that was the emperor's directive. As it served as proof that one was the successor to the throne, thus fanned the flames for the battle of succession. The girl who holds the key to the emperor's directive due to a request made by the third prince becomes a substitute bride to a noble family to escape her pursuers.

Original Webcomic

Official English:
Webnovel (Dropped), Webcomics