That the author of this series also wrote Toradora doesn't surprise me. I really liked reading this. There was no "perfect" girl as so many romance stories have. All the characters were deeply flawed and needed someone else to keep them going, both Souma and Matsuzawa. Its not a tragedy because of death or poverty but rather because of missed chances. One bad thing (failing to get into boarding school) led to another bad thing (no more letters sent between these sort of lovers) led to Tamura eventually moving on in his love life. It wasn't even his choice, more something he was forced into by having helped Souma and later something he came around to accept.
Souma in particular was a compelling female lead. She was unable to show weakness to anyone around her because of barriers she put up. But Tamura was able to see through them and allow her to be weak in front of him. Afterwards, he could be weak in front of her. That's in my view what true love is rather than loving someone for being "kind" (i.e. a self-insert) as most other stories are.
The two small problems were the frequent flashbacks and series length. The flashbacks got in the way of Souma's time with Tamura. They should have been placed in intervals where the story arcs flowed naturally as opposed to jagged like here. The series also needed two or so more volumes to flesh out the interests of Tamura and Souma, such as hobbies. In particular, Souma needed one more volume worth of development as her confession came too early in the story.
Despite the flaws, the story is still very good. I throughly enjoyed it to the point of writing this large review to express myself, the first time in about ten or so series that I've done this. As usual, a great shame this does not exist as an English paperback.
8/10.