The main point of writing this review was to provide a counterpoint to some reviews you might read about this show. The main gripe seems to be that the plot/characters are too boring or basic. On the contrary, I would say that the character interaction and plot is actually quite complicated and intricate. Unlike most romance series, this show doesn't hit you over the head with its message and spoon feed you everything through narration or dialogue. The author relies on the experiences of the audience to inform their understanding of the plot. When you take that into consideration, the series' complexity is deeper than most.
The art and sound are competent, but not particularly special. I do like that it doesn't sexualize the female characters or shove fan service in your face at every turn (I will always mark up art design that doesn't do these two things). The series' art seems to go downhill as the episodes move on, which makes it seem like they started to run out of money or time and had to do the later episodes without quite as much polish to make up for it. I would give the beginning an 8 and the rest a 6, so I give it a 7 overall for art. The music and voice acting is competent and you won't notice any of the common issues with bad anime.
Overall the series is a very good. If you like romance plots, this is a must watch. If you're not invested in romance plots, but just want to see a good story this is still for you. If you're looking for fan service, action, or heavy drama, I would probably look elsewhere.
"Say 'I love you'" gets a much deserved, 8/10.
