a!Baek Do-geon x o!Yuu Hae-soo
a!Tae-oh x b!Haejun
Omega Hae-soo got broken up with because he "wasn't attractive enough" (BS). He goes out drinking with a friend where he ends up going into heat early and has a one night stand with alpha Director Baek Dogeon. Hae-soo ran for it as soon as he woke up and, surprise surprise, ended up pregnant. Time skip to five years later with a child and a new job, they meet again... with Do-geon as the company's new CEO.
It's My Baby!