Really good!
It's super well-written. It's a first-person perspective, which is my preference - especially when it's written half-decently. And in this case it is.
It has length and is part of a series of books, so there's some depth to the characters and the story, and it takes its time and doesn't rush through the events.
The characters are different than the usual broody, dominant male with muscles, and the elfin, innocent young girl. Here it's two women; one with a dominant persona and one with a childish persona. And I like different.
The sex is hot, like super hot. It's difficult to write sex well. Either it gets too mechanical (in, out, in, out...) or too lyrical (her magnificent bosom glistened like summer dew on a...). This does it well, because it integrates itself into the story.
It's definitely high on the tender-loving-and-care spectrum of age-play stories, and it is off the charts on the little-girl scale as well. The main character has a very vibrant, childish personality.
The actual story is quite mundane and believable. It's just two women who meet each other and develop a relationship because they click - and then it's off to the races! It's very simple, but it's so well-written.
Of all the age-play books I've read, I won't hesitate to say that this is among the best. And since it's the first in a series, I'm right off to the next.