Bride of the Barrier Master, Vol. 6 (manga)

Hana and Hazuki's parents pay a surprise visit to their school, where their father pleads for the once discarded Hana to use her newfound power to get the Ichise name in the clan lord's good graces. But just then, the twins' estranged older brother, Yanagi, appears to set their parents straight! While the truth about the Ichise family's history is revealed, the mysterious and handsome Yukizasa plots in the background... What could he be after?