Konya Dake Cinderella

From fictiondb:

A Royal Wedding? Reporter Leigh Donovan couldn't believe her luck! the Handsome prince she'd been searching for had just run her car off the road, and now he was proposing the deal of a lifetime: one juicy interview in exchange for her hand in a never-to-take-place marriage. Surely Leigh could handle being the prince's pretend fiancee, helping him ward off pesky would-be brides while he was in the States. After he returned home, they would go their separate ways - Leigh with her story, and Prince Max with his precious bachelorhood intact. Unless she could convince him that she would make the perfect princess...