Spoiler to ending (if you curious)

Gyu Ha (uke) is omega but raised as beta, not because his family ashamed of him as omega but when gyuha was born there's national news about omega male being bullied and died from suicide. Therefore the parents decided to raised gyuha as beta to avoid him being bullied. Percentage of male omega is around 0.01℅. Usually omega born as female. Gyuha grew up being literally spoiled and he has vision to never get married or having kids. Gyuha had surgery to block pheromone when he was 17 which is still underage.

Ok, so gyuha will get pregnant just as you all guess. He wanted to terminated the baby but because his pheromone blocker surger was done when he was underage, if he erase the baby, he will forever live with defective body which can't control pheromone at all. Gyuha who lives without being able to release or smell pheromone, scared. So he ask Chayoung in round about way, what if someone come to him and told him, they were having his baby. Chayoung who didn't know gyuha was pregnant, only answer carelessly : of course terminate it, they have my child without my consent, it's obvious their motive is money anyway.

Gyuha was shocked and deeply hated chayoung. Anyway, gyuha mom & chayoung grandma have prenatal dream about gold nugget (gold meant the baby). Gyuha mom accidentally found out he is pregnant. Gyuha took vacation overseas and decided to give birth overseas and raising the child with his parents (his mom). At this point, gyuha already blocked chayoung at all communications. Chayoung felt confused at first, but later he will get misunderstanding, he THOUGHT gyuha made other girl pregnant. So chayoung decided to find the woman and erase the child. When chayoung can't contact gyuha, he realized he actually likes gyuha. He used all any mean necessary to find gyuha. Finally he found gyuha was frequent to hospital, he used rich guy methods to get his hands on gyuha medical history and found gyuha is pregnant and already undergone pheromone blocker surgery. He is convinced the child is 100℅ his child. He wants to meet gyuha and ask for forgiveness for what he said, he didn't mean that answer for gyuha. It was all because he was born in chaebol family, and many people tried to used this method a lot.

Chayoung visits gyuha's mom, told her he made huge mistake and really need to ask forgiveness to gyuha. So the mom let chayoung know where they stay overseas. Chayoung visit gyuha. Gyuha was angry yadayada it's misunderstanding I really am love you I won't erase the baby let's be a family and raised the baby together.

Going back to korea. Chayoung suddenly kneel on the floor in front of gyuha parents and ask forgiveness because he made gyuha pregnant but he will take responsibility, marry him and raise the child. Gyuha parents were shocked because they both don't know gyuha and chayoung are gay or having this type relationship. Gyuha mom only thought the other party is female alpha. While gyuha dad felt betrayed because he trust chayoung how can you do this to my youngest.

Chayoung ask his parents to make the wedding happens. While gyuha thought, why should we get married? I'll give birth to the child but I won't marry you and my mom will help me raising the child.
It's kinda baby trap. Because chayoung really afraid gyuha will go missing again if they don't get married. In the end they will get married but sadly it's not portrayed in the novel.

Chayoung is chaebol, while gyuha is just normal rich kid, not chaebol level that's why gyuha felt hurt when chayoung said "the motive is money anyway".

The baby is boy, name GyuYoung (Gyuha x ChaYoung).

There's no angst, the arc where gyuha misunderstand chayoung and chayoung looking for gyuha is so short so it's safe to read for anyone who don't like angst.
Practically after find out gyuha pregnant, chayoung become super sweet. Just like park dojin in love is illusion.

Side stories are about their life after married (pregnancy depression, delivery, etc) and gyuyoung in kindergarten.