A nice little manga. Just a small spoiler, but from the ending, seems like the series got axed or the author decided to end it quickly. Supposedly should’ve had a 4th girl but who knows if maybe she was not well received or what, but her plot never came.
As for the story’s premise. I won’t necessarily say it’s unique in a sense, but it was done quite well, and the girls were very cute. Every character had a bit of their own flavour, so they were written pretty decently. It’s unfortunate the series had to end so soon, but it was solid for what it was. I do recommend to try read it. Unfortunately the ending might not be satisfying, but I’ll guarantee you won’t feel saddened by it.