I Stole the Male Lead's Virginity and Ran Away

I suddenly manifested as an Omega and ended up having a one-night stand. Of all people, my partner was Calder, my long-time rival and my boss. “……Am I getting fired?” However, all that shock was nothing compared to the realistic crisis: the fact that my profession is forbidden for Omegas. ‘No way, I finally got a job in this wretched class society!’ So, casting aside all shame, I begged him. To keep the fact that I am an Omega a secret. “I’m a beggar with tons of debt. Please, just think of it as saving a human life……” “Fine.” “……Just this once, please?” Just as I was wondering why he agreed so readily, Calder spoke with a gentle smile. “In exchange, take responsibility.” Huh? I ...