After the General Was Reborn, He Saved the Dog but Not Bai Yueguang.

The third prince and I rescued a pair of twin sisters who made mistakes in the hunting ground. The elder sister was very beautiful and was taken as a concubine by the third prince. And I brought back my sister with a scar on her face, tried my best to treat her injuries, and promised to marry her. But when the third prince and I were injured at the same time, she gave the only bleeding pill to the third prince who had a broken skin. At the moment when she died from all her blood, I realized that she had been in love with the third prince from the beginning. When I opened my eyes again, I went back to the day I saved the two sisters. But this time when I faced the choice between sisters, I decisively chose the scrawny dog.