
Let's be real...
The twins might be horrible people but what they did was both good and bad for the MC.
Let's put the SA aside first.
First, imagine if they let the sunbae alive, he will probably use the mc for his own selfish desire while manipulating the mc saying they will stay together till the end, but in the end, he will ditch the mc after he gets everything he needs and he probably didn't even feel grateful for everything that the mc has done to him.
Second, when the mc escapes with the old man they realize that only one of them manages to go to the surface so he beats the MC up and tries to the mc then the twins show up and beat the man to death. The mc sees them as saviors after everything they have done to keep him alive.
Third, why does he accept the leash? I don't know either. But if you are in his shoes won't you go insane after finding out that the world is falling apart and the only people that make you feel safe are the twin who has killed your crush and SA'd you multiple times but in the middle of it they also deeply care about you and your well-being. What choices does he have? There is no one else besides the three of them and yes he can run away without them but he already knows that the elevator has to function manually and he can't accomplish it by himself. His mind is breaking.
Fourth, ...He is finally free yes... but after everything that has happened to him, he is in a deep trauma and he has no one to depend on so he is very helpless.
Is he strong enough to survive till the end? We don't know.
Is the military gonna find him and save him? We don't know.
Is he gonna suffer alone on his journey and die in the middle of the chaos? We don't know.
Is he gonna reunite with the survivors and have a happy ending for himself? We don't know.
Is he going to meet more horrible people than the twins and got tangled with them on his journey outside? We also don't know.
I did not mean that the mc cannot be independent but if I have the power to choose I would much more prefer if the mc and the twin escape and stay together on the surface till the end since they already have a bond with each other after you know their stories. It just mind-wrecking

~SPOILER~
You will cry at the end of the story for sure

~SPOILER~
In the end, they have to be evacuated because the earthquake is getting worse. When they arrived at the tunnel, the elevator had to be handled manually so the older brother shoved the MC inside the elevator and chose to sacrifice himself for the MC and his younger brother but the younger brother knocked him out because he didn't want to leave without his older brother so he cranked the mc alone to the surface while he and his brother stay trapped inside the sinkhole together.
I'm sobbing like a toddler in my workplace after finishing the story cus damn I feel bad for the mc cuz he basically helpless without them

i might get canceled for saying this but that blond and warden couple pissing me off and take alot of the story when it's not even their story like i want to see my preggy fox not an alpha-becoming-omega-crisis when that ho can just choose to stay away from that blond mf

their story has potential but their story keeps messing up the plot of the actual main storyline, also not to mention they're just a side couple. The author can make a side story of them or a full entire manhwa dedicated to them only so the story wont get mixed up because the plotline is already messy enough for me to read because they keep getting in the way of the main couple.
its feels like one of my c.ai chat lol
EXACTLY WHAT I WAS THINKING. Author has zero patience to give us any scenes actually building the relationship that isn't just smut lol. Excessive timeskips and dialogue to just explain instead of show any reason to root for them
It's exactly like this:
ml: I don't have any feeling for you also I don't want any kids.
mc: *Avoids ml because of brokenheartedly.*
ml: HOW DARE YOU AVOIDS ME!
oh shi- pls ignore my grammar mistakes
I didn't notice until u said it!
Bro chai is even worse (/TДT)/
Kekkekekekekekekekeke