[Yuan Xu] Miracle in ABO

As a Beta, Xu Sanduo had a crush on his Omega mentor Shi Jin when he was a graduate student, but unexpectedly met Alpha Yuan Lang who came to the school to promote the joint master's and doctoral training program. As Xu Sanduo, who calmly accepts the laws of this world and his own Beta status, in the process of getting along with the two of them, he gradually sees that there will be "miracles" in this world that transcend the inherent laws of ABO. Conception: