Henai Love and Hate: Ore wa Unmei no Tsugai ja Nai!

Ao is a poor omega who works part-time jobs to get by. One day, he finds a job as a test subject for heat suppressants! But when he shows up at the company, he suddenly gets his virginity stolen by a beautiful man! That man had instantly realized that Ao was an omega even though his stern face led others to think he was a beta. He even became Ao's stalker, but he was actually Sakuya Nishina, the pharmaceutical company's representative! Ao obtains suppressants under the condition that he allows Sakuya to try and seduce him. Will Ao be swept away by the intense love attack of the top alpha elite Sakuya?

(Source: BisouBisou Comics)