Isn't nobody bothered that the creator fell in love with its own creations? She even aknow...

Didn't Pygmalion just create a sculpture he fell in love with?(￣∇￣") In a way i dont think it's weird? It's like when artists draw their "ideal" boyfriends and shit. I mean she only visualized the world and the whole story isn't even following her own story. I really wouldn't call this "grooming" in the sense u are intending

I mean...speaking as a writer myself...while I do refer to my OC's as "like children to me"....I write them with traits that "attract" me aka traits I like to see in characters (aka being a trickster, mysterious, kind, etc.). Calling your own characters (OC's) your "children" is often just a fun and silly way of addressing them as your creations. It doesn't actually mean you see them as kids or that you consider yourself their "mommy" and/or "daddy". It's just an endearing way of saying "I like my characters so much I might as well consider them my children or something".

Not only that but I'm pretty sure the main character of this piece designed the male lead to /purposely/ be attractive to her because that's kiiiind of what writers do - write about the types of characters that are attractive to them (be it characters that are physically attractive or just have attractive personalities). It only makes sense for her to fall in love with him if she not only knows and understands him, but designed him with the intent of him being attractive to her. Writers in the real world do this so it's no surprise that, if given the chance to meet their original character, many would end up falling in love with them.

So summary: Speaking as a writer, when writers call their own characters "their children"/"their babies"/etc. they Do Not Mean It Literally. They mean it as a way of fondly addressing the fact that said characters are their own creations. Not only that but many writers tend to design characters they find attractive to themselves. So, if a writer is sent to the world their creations live in and comes to face with those attractive characters, you can BET any writer would jump on the opportunity to be lovey-dovey with the characters they've created that tailor to their own interests.

*should also note that this manga is a more realistic take on the "creator meets creation" piece in that the MC is aware her creations are fake but, upon realizing she's trapped in this world, has come to see them as living individuals to the point they are in-differentiable to human beings in her world. That is especially important in this piece because if she, the creator, sees her creations as being human and /alive/, of course she's going to develop feelings for characters who feel like real live people and adjust from her world to theirs. If they were 4D caricatures or it was blatantly obvious they can't mimic basic human behavior (think every dumb AI in games ever), the MC would still think of her characters as puppets she can control and have fun with but, because this story heavily implies the world she's now in is REAL, she can no longer stay in the thought process of "these are my creations I can tinker around with and not feel sadistic about it" and instead is now in the thought process of "oh shit these are real living human beings who don't function solely off a script I've written so I gotta be careful about the repercussions of my actions now".

So, adding that to the narrative we've got going so far, it adds further sense that the MC is falling in love with her own creation because now she's viewing him less as her creation and more as an actual human being (which, as far as we can tell, he is no different from an actual person. In fact, you'd be really hard-pressed at this pt to get me to believe he's an AI despite the story so far contradicting me otherwise because of how /human/ he acts).

(also sorry for the long tangents but as a writer I understand A LOT of what this author is trying to accomplish with her main character and her MC's creations and it's actually a really really REALLY good take on the creator & creation subgenre as well as pretty damn realistic because if I was in the MC's position with my own characters, I'd probs feel the same way towards my own characters lmao especially since they are designed around my interests just as much as hers are)

Thank you very much for the input!
But I personally prefer the emancipation stories like the play Pygmalion by George Bernard Shaw.
The trope Born Sexy Yesterday or Falling in love with a being that you made with your own hands still gives me kinda the creep....
In my mind I can't make love with someone who I gave birth to... Even it is was through magic or science.

I really appreciate your long statement even though I can't personally agree with the logic of authors like her. But I do understand what you are trying to say.
Raw Spoiler:
So the MC managed to return home or was suddenly pulled out of her fictional world.
But after a while she decided return to because she misses her ML. We also see the other reason why she wants to go back to that reality is because she can't deal with the real world and how miserable lonely her private life is.

I don't really like the message that you should rather go to the more exciting dream world where there are two or three people developing feelings for you than improve your own situation in the real world.

I am sure there will be an upcoming far fetched explaination or revealation why her AI world and characters have become sentient beings with their own lives.
For instance, it turns out that world already existed or an entity felt bored and inspired by MC ideas and decided to make her virtual story real...

https://www.youtube.com/watch?v=0thpEyEwi80
Born Sexy Yesterday

https://www.youtube.com/watch?v=-z1shxeqCpM
STOP MARRYING YOUR DAUGHTER