Kiriya Hakushakuke no Roku Shimai / Six countesses: Sisters Kiriya

Former reporter Tokitsu Daisuke comes to a suspicious western-style mansion built over a hill overlooking a provincial village. Awaiting him there is a mansion's mistress, Kiriya Sumi, and her beautiful daughters.

Sumi informs Daisuke which he has been chosen to get to be the next patriarch, the only real male organ with the Kiriya family. In turn, all he must do is impregnate among her daughters.

However, the Kiriya has a dark secret inside their bloodline that might well have severe repercussions for Daisuke...