My Omega (BL)

Jin is in his sophomore year of university; his second gender is an omega. But the problem he faces is not just because he was born an omega but he has symptoms which to date has not been verified as to why he has that? Dr. Kim Namjoon, currently 24, met Jin when he was a child since he had started his doctor's career right after he had finished his sophomore. How do their fates intertwined, ever since the first time they met?