It wasn't anything I imagined from reading the synopsis. I didn't expect a 10 year old game to be of this high quality. (Though sometimes I felt it was too drawn-out at places, Lily's and Hanako's route specifically. Its probably a me problem since a lot of other people loved them the most. )
The art is really good. About the h-scenes, this is a more romance focused game, where the sex is for adding intimacy. So, don't expect any visual gratification, but you will get emotional fulfillment from them. The music is such that people go on to YouTube to search for playlists. About the writing. It was exceptionally wholesome and made me feel a lot of emotions throughout the play through which is very rare for a h-game. That alone makes it worth a playthrough.
A lot of content is there. It took me like 40 hours to read through all the four girl's routes (I haven't played Shizune's yet), which were all well-balanced. There are bad endings as well. All the routes and the branching of the endings makes you feel like your choices matter .
After getting used to their disability of the girls over the course of the game, you slowly ignore that and love them as real people. Their respective physical disabilities (burns, no legs, blind, no arms) don't matter at all, which was unexpected to me, because I expected that to be the focus of the game. More than that, their emotional problems are what draws us in and ultimately makes their characters real people, instead of caricatures of disabled people. As Hisao navigates those, we as the reader are very invested in the story as he comes across the same problems we all face when trying to make relationships work. This game really struck a chord with me (especially Emi's route) and I expect it will for you too. So yeah, definitely give this one a try.