Nobara No Hanayome

from shoujo crusade: yamada chizuru was a normal high school student… that is, until her mother left for a “journey” leaving her with a debt of one hundred million yen! as if that wasn't nerve-racking enough; kuze mitsuru, the umegaki gang's sandaime, saves her by buying her to be his fiancee!? what will become of chizuru's days?