My sister chooses me tonight

Arin, the adopted daughter of a conglomerate family, harbors twisted affection towards her new stepmother. After becoming an adult, Arin realizes she possesses a cheeky ability through a chance accident. She attempts to attract her stepmother's attention using this ability, but it's her stepbrothers, not her stepmother, who desire Arin. Arin, the dangerous adopted daughter shaking up the "Rare Moon" conglomerate family. Her twisted crimson romance!