I love this manga. It's one of the classic yuri romances. Sweet and fluffy, including some sweet, fluffy sex. They're just a lovable pair. The more adult side couple add a touch of bittersweetness, but only a touch.
I really enjoyed this. It has drama, but it's never very serious. The characters love each other so much that they immediately want to try to fix what is wrong and seek advice from people around them on how to make up. I'm honestly surprised this series isn't more popular than this.
My only real criticism is that I do have some minor issues with the art style; it's not really to my taste. The exaggerated cheeks on Chitose and Yae in particular makes them seem like they're 12, even though they're actually like 16-17 (since they're freshmen in high school).