Sacheondang-gaui Sibiro Saranamgi

An ordinary woman who once dreamed of the Martial World awakens as Dang Sohye, a lowly handmaiden serving the Sacheon Dang Clan, a house notorious for its poison techniques. She thinks she’s possessed a doomed extra, but this body is anything but ordinary. As the clan’s fearsome grand elder takes her in and a young swordsman from the Namgung clan notices her, she’s swept into a deadly power struggle. Can she master the Dang Clan’s techniques and survive the schemes closing in from within? (Source: Tapas)