How to expect the unexpected (SCI mystery abo au)

Zhan Yao, number one criminal psychologist has two secrets. One; he is an omega, who uses suppressants to be a beta in his daily life, and two, he is a stinking virgin, never having a heat after his presentation. His whole life, all twenty nine years has been spent hiding his second gender so he can work undisturbed in the police force, but Bai Yutong knows from being his childhood rival that one day Zhan Yao will either forget his suppressants when it really matters, or push his body to ignore them.
They end up changing all in a hotel room, on a stake out where the omega forgets his meds, and has to live through his heat. He not only becomes bonded, but gains children, a husband and a new way of looking at what success is.