Bruh, harem romcoms existed long before 100 girlfriends, you normie. For that matter, this exact idea was already used in an even older manga with the same setup, that got axed.
If I had a nickel for every time the 3rd Girlfriend of a peak fiction harem manga was an incredibly shy timid nervous animal type who's chapter after joining the harem was about getting along with the first two girlfriends with very excitable personalities, I'd have 2 nickels, but it's weird that it happened twice.
Me when I read the first tv bubble: uh oh and when next slit was revealed: Let’s fucking goooooo now we have another so they can make a soccer team of kids even faster
For those unsure, how many will appear: In the picture, you can see 7 Karens surrounding the original. So depending on how the original will be handled, the full harem will consist of seven or eight members.