
So I read up to chapter 13 on Webtoon and still cannot understand a few things -
Why would uke try so hard to hide the fact that he's not related to the family by blood?! Wouldn’t at least the mom know that she didn’t give birth to him?! (Unless he got switched at birth). So what happened to that boy? (assuming the babies were the same gender) Where is he?
And why would the dad need his nearly de*d son to get married if an Heir is all he needs?! Couldn’t he extract sp*rm from his son and find a surrogate or something?! Even if he wants a wife for his son, there would literally be Omegas out there who would take up the task despite all the risk associated with it. A house and and a company would be a price they wouldn’t even dare to ask for! Why this particular omega? Why uke? (Unless it's his pheromone that would somehow help seme heal or create a strong heir or something?! Or they’re a fated pair or have a high matching rate or something and seme's dad knows about it?)
The art is so good. The characters are hot.
I hope Author-nim fills the holes in the plots if s/he already hadn’t planned on doing it.
Edit : I had typed a whole lot of things but why did they vanish?! (〜 ̄△ ̄)〜

The ending seems to done in a hurry. We have so many things we need to know, like did the seme know uke since childhood or did he get those photos of him with the help of a private defective? What even is their background story and are they really properly dating? What would happen to their relationship after 5-6 years or when Seme's parents find out? Like everyone commenting here, it could definitely be a longer series with 20+ chapters (at the least)

This is supposed to be short. There's a collection of this type of webtoon called the Gwanggong series about characters that are obsessive that lives in this apartment complex. Here's the list of it if you want to read the other. https://www.mangago.zone/home/mangalist/2672822/
Mind you some are intense and some are actually a cute read.
Oh how the time flies!
One of the very first BLs I had read. Can't believe it released even before I was born!
I often wonder about the Fujoshis who lived and thrived (by reading these BLs) at that time. Can't imagine I would even get to know about BLs at that time considering how conservative my family and society is even at this time and age. I'm just glad I found it.
Girl how old are you
In my 20's. Read it when I was a teenager lol