A Martial Master Wakes Up as a Concubine

Once a notorious master of the deviant sects, Nyeonbi Cheon pays a hefty price for her romance with a man of a virtuous sect, Won Gae of the True-spirited Sword. As her lover poisons her to death with a dragonsbane fruit, Nyeonbi perishes with more questions than answers. When she wakes up, however, she finds herself in a different sort of peril, as she reincarnates in the body of Noble Lady Soyeo Cheon, a concubine of the imperial palace. As Soyeo, Nyeonbi must rely on her knowledge from her past life to navigate both intrigue and romance in the palace!
(Source: LINE Webtoon)