It was sort of hard to watch.
Tatsuhiro Satō is very much like myself, the main difference being that I haven't dropped out of college. He has all of the same flaws: fear of social interaction, low self-esteem, etc. Watching his struggles was a little depressing, since I've felt the same way many times before.
By the time it was over, I felt absolutely terrible. It isn't easy for me to give it a numerical score. My opinion isn't that simple. I didn't enjoy it in the same way that I would enjoy Generic Mecha Anime #1534, but it did change the way I look at things.
I guess if I had to, I would give it a 9.5/10, just for Misaki Nakahara. T_T