(System + transmigrate into a book + doting on her husband + lots of sweetness later on)
After dying unexpectedly, Shen Jiaojiao transmigrates into a wealthy-family novel as its vicious supporting female character, the heiress of the Shen family in Modu. The male supporting character, Bai Chen, is the illegitimate son of the Bai family, one of Modu's four great families. He has suffered abuse at the hands of his birth mother since childhood, and the female lead is the bright spot in his bleak life. To win her over, he imprisons her and returns to the Bai family to fight for power against the male lead, Bai Jian... In the end, the leads join forces from within and without, the male lead gains both career success and a beautiful woman, and Bai Chen jumps into the river to kill himself. [System: Host, please save the male supporting character! Raise his affection and earn life points.]