I hate to be blunt about it, but it's just not realistic with how Korean society and culture works, and with how the industry works. At the base of things, idols are marketed as being the perfect boyfriend/girlfriend, and their images are crafted for fans to believe that they could be that idol's other half. It's why dating scandals are such... Well, scandals. As idols age and mature, most fans will drop that possessive belief.... But some don't.

More than that, Korean society is fairly traditional. If you're pregnant, you'd better be getting a shotgun wedding before the baby is born. This is easier for male idols to navigate around because they don't carry the baby to term. In fact, some idols that are caught passing with children they claim are nieces and nephews? Those are sometimes their secret children. Just imagine how scandalous it would be if their fans found out that some random girl that has been slept with had their precious oppa's baby. So they have to hide it. Because for most, marriage will end a career, and babies will ruin their image and potentially their lives.

Females have it harder. Two of my coworkers were pregnant in the last year, and it started showing on them both within about two months. Physically. Emotionally, one was so volatile that if you looked at her wrong, she cried. The other got aggressive. So maybe for two months they could promote and do their things normally. But after that point, they'd at least be gaining weight, not to mention the mood changes, and that wouldn't be something the idols or their companies could hide. Weight is a big thing in the industry, once they're outside a target weight, the diets begin. And if they don't, the fans will notice and make idols do self conscious that they start working out and dieting on their own. Hello hiatus until further notice.

Fans get scary about idols that go on hiatus for too long. Fans get scary period. Give them an inch and they'll sleuth a mile. If there was even a hint of rumor that the idol was pregnant and on hiatus to hide it, Dispatch would be on that like dogs on the hunt. Any evidence to support the claim, and their career would he over.

For how possessive fans get... Think of Edawn and Hyuna. Most were happy for Hyuna. She's of the right age to settle down. But Edawn had pretty much just debuted. His "fans" and pentagon's "fans" demanded he be removed from the group.

Marriage scandals... Sungmin is a good one. His marriage upset fans enough that most wanted him out of the group. Chen's also caused a huge stir. And while his was handled more graciously, there was still so much backlash that he was almost removed from the group.

Most idols that choose to get married and have a baby don't come back. Yulhee chose to leave. And she and her husband got away with it because they're from a slightly smaller company, her husband was a seasoned vet in the industry and his fans were at that stage of letting go so he could find happiness, and it was expected for him to settle down eventually. And she /left/. The girl in Wonder Girls left for a while, wasn't expected to return. She chose being normal and having a family. And then decided to come back. But as a seasoned vet, and part of a group that had helped pave the way in the industry, it was deserved.

There's also the matter of training debts to consider. And the danger to an unborn child if you continue working. But those are talks for a different time.

But just imagine a rookie idol trying to keep a pregnancy or a baby a secret. Idols generally have to live in their dorms for the first few years. No seeing their children, if they have any. And no hiding. So imagine if a girl from Twice or Black Pink tried to hide a pregnancy or have a child without leaving. Imagine a member of BTS or NCT trying to get married. The higher you climb, the greater the backlash and the harder you fall.

Sorry to double comment but I also just wanted to add that I feel like it would be too much of a liability for a company to accept someone with a child.

I think it depends on the story. I think for a new/young idol to be in a group and have a child is kind of wildly unrealistic, especially for a female idol. I also think it would be selfish for a mother with a new child to want to become an idol because idols are just super busy, they mostly live in dorms and it just seems unfair to the child, especially durning the early stages of their life. That being said, I feel like it certain circumstances it could work kind of well but I feel it's something that has to be done with a lot of thought.

I dont think young female idols becoming pregnant and staying in the group is unrealistic. For guys it is acceptable (but dramatic) but mostly very late into the career. Female idols would only be fine if they are married and veteran idols like the one from wonder girls. But the way you do it is simply unrealistic