TL;DR: Very light-hearted, fluffy, and sweet read that will enamor any girls' love fan!
Story: The premise is relatively simple. Haru, a young, sheltered woman, is married off to Sensei, an older woman who writes novels for a living. Having no idea of what is expected of her as Sensei's wife, Haru putters around awkwardly as she tries to settle down and resolve her feelings - and Sensei is too busy to notice! It's a very light premise that mostly serves to set the stage for the blossoming romance and the slice-of-married-life fluff. There's not much to keep track of: there's the two main characters and
two (and counting) supporting characters, and Haru and Sensei dominate most of the manga.
Art: Pretty! The color covers for each book are very beautiful and pleasing to look at. The actual manga also features clean and pleasing art reminiscent of Fu-fu - a little leaning on the moe style but not to an extreme super-deformed form. The art style changes for emphasis and to show emotion or highlight a certain scene, but is mostly very pleasing to look at. The cat ears are a very large bonus!
Characters: It's definitely not unique - sheltered girl awkwardly puttering around (more) experienced girl - but characterization is solid for the most part. There definitely was not that much needed to get this story going, but the differences between Haru and Sensei give more than enough material to play interactions off with.
Enjoyment: It's fluffy, it's sweet, and it's shoujo-ai. If you're into light-hearted girls' love, you'll like this a lot!
Ending remarks: You know what you're looking for when you got into this page, and it's exactly what you'll get - fluff, sweet fluff. Expect no more and you'll have a great time!