From SCX-Scans:
Once upon a time, there was a courtesan who fell in love with an impoverished Noh-mask maker. However, when her lover rejected her, the courtesan threw herself from a bridge in dispair. She left behind a note cursing him and his descendents. In current day one of that man’s decendents, Izou, discovers that the guardian mask at his temple has cracked and the…