Totsugimasen Kara!

Itsuki, a senior high school student, was ordered by his mother to work as a servant under the Tenmei family during his last summer break. Little does he know that he is actually one of the bridal candidates of Tenmei's young master named Jin. Competition proves to be fierce as the contenders are all male Omega from well known families, while Itsuki is only from an ordinary household.