I'm an extremely avid fan of CLAMP. I'm well aware that they have a penchant for writing about teacher-student romance stories, and this one is no exception.
The premise is quite sad. A naïve and kind girl lives alone in a big house, and a stranger moves into the house next door. Surprisingly, the stranger turns out to be her new homeroom teacher. She enjoys the attention (outside of school) that he lavishes on her. Her other friends are fully cognizant of what's happening with their friend and they attempt to warn her, albeit not in a direct and straightforward manner. However, she simply dismisses their concerns.
It's interesting in the sense that it constantly makes you ask yourself "why this" and "why that". But overall, it's just a story of a student having a crush on her new teacher.
I really like the art. Since it's the classic CLAMP art style, I'm awarding this manga four stars.