After I Got Pregnant by My Ex-Boyfriend's Older Brother

Lin He Yi broke up with his boyfriend. His boyfriend had cheated on him, claiming he'd found an Omega with more assertive pheromones who was a better match. During the wedding preparations, he stopped taking his suppressants. After he started taking them again, his heat cycles became more frequent and more intense, and he gradually developed resistance to the suppressants. It was the fourth time in three months. The suppressants had stopped working completely, and the only other person in the conference room was Shen Qingyi. He was the project lead, as well as his ex-boyfriend's older brother. His compatibility with Shen Qingyi was also over 90 percent. Afterward, Lin He Yi apologized in a hoarse voice. "I'm sorry... I'll switch to another suppressant." Shen Qingyi paused as he straightened his clothes and replied evenly, "It's fine." The episodes became more and more frequent, going from once a month to once every two weeks, then once a week. The new suppressant soon stopped working. In the laboratory, he cornered the project lead, who had come to inspect the place, in the restroom. He called him by the name he'd used long ago: "Big Brother." "Could you help me with another marking?" The symptoms eased after a deep marking, but were followed by drowsiness, nausea, vomiting, and loss of appetite. Lin He Yi looked at the report from the hospital and swore. Cultured scoundrel, powerful top x meek, yielding beauty bottom 1. Five-year age gap, both are each other's first. 2. Lots of personal worldbuilding. Theme: Responsibility.