The Revenge Plan of the Second Princess

When they were very young, their parents were killed and they went to a grandfather's house. The grandfather took them in and took them to the Island of Death, where he trained the two of them as killers with high status. One day, they swore that they would find the person behind the murder of their parents and then brutally torture and kill him. However, later, they met the two princes of Shengying, and later they became boyfriend and girlfriend. However, they still wanted revenge, and the male protagonist was unclear and confused. After many dangers. In the end, will they be together? Will revenge be successful? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.