My Younger Sister Chooses Me Tonight

Arin, the adopted child of a chaebol family, possesses a warped affection for her stepmother. Upon reaching adulthood, Arin inadvertently discovers that she has extraordinary abilities. She attempts to leverage her powers to catch her stepmother's eye, but it is her stepbrothers who desire Arin instead of her stepmother...

A perilous adopted daughter who disrupts the conglomerate 'Rare Moon' family. Her twisted crimson romance!