It should have been a Yuri instead they paired the older sister with her omega twink assistant who has loved her but lied about being asexual so she had no idea he was interested in her. What's worse it's this love triangle between the sister and her best friend over the omega who is really unlikable.
The ending felt rushed (but I'm glad it Ended). And they have a baby. It just leaves you wondering if the sister even loves the omega or just didn't want to lose her assistant and wanted her own family.
It had so much potential bur was wasted due to a bad pairing. Which I think fargo likes to do.
To give you an example how unlikable and boring the omega is from the sister's story, he made me appreciate the crazy ex husband of dojun whom ended up with beta. His character was more interesting and had depth.
If this is anything like the spin off for Byul's aunt. This is going to be a disappointment. I hope other guy is an omega.