Gloria: Kindan no Ketsuzoku, Gloria: House of the Forbidden Fruit

The Gloria family is definitely one of the wealthiest and most prominent empires in Boston. When top students Kira and Beowulf are available tutoring jobs at the Gloria estate, both teenage boys are more than happy to oblige. Beowulf is straight away interested in the icy beauty Eterna Gloria, eldest daughter in the Gloria family. Eterna may be the only daughter who's not adopted on top of that. Beowulf wastes no time in pursuing Eterna, and Kira remains responsible for Eterna's four sisters -- Celia, Naomi, Charm, and Mary. But there have been several attempts on the Glorias' lives since Kira and Beowulf started... as well as the matriarch Ms. Michelle Gloria is apparently keeping a really big secret...!