Kekkaishi no Ichirinka

Hana Ichise belongs to a branch of one of the five barrier-weaving magical clans tasked with protecting Japan, yet her parents regard her as unremarkable beside her gifted older twin sister. When her true abilities surface at fifteen, Hana chooses to conceal them, even from her family, hoping to preserve a calm and ordinary life. Her plans are disrupted when Saku Ichinomiya, the formidable new head of the elite Ichinomiya clan, begins searching for a bride and sets his sights on her.