Swap Couple ABO

EnigmaxOmega + Run with the ball Lin Yu felt that he was a broken Omega. In order to leave the blood of her husband who died in the line of duty, he endured the pain and performed many embryo implantation operations, but they all ended in failure. The doctor told her tactfully that Omega, who had not been marked for life, had a narrow reproductive cavity and it was extremely difficult for the embryo to implant. After learning that her husband only had the last tube of frozen sperm samples left, Lin Yu made a crazy decision in despair - He planned to go to the black market to blindly match an Alpha and arrange to meet him when he was in heat. Lin Yu's purpose is simple: to let the other person form a knot in his body, so as to awaken the reproductive cavity and verify whether he is still capable of pregnancy. Purpose: Cherish the people in front of you