Sister, I'm Easy to Woo

Sheng Shuran was raised by the Fu family and had a childhood engagement with the eldest son. When the Fu family brought back their illegitimate son Chi Hei, who had been rebellious and often punished, Shuran took special care of him, unaware that she was raising not a puppy but a wolf. Chi Hei had dreamed since childhood of marrying Shuran.