Kind of funny how it wasn't a really happy ending for anybody. Tenma and Karasuma got each other but Karasuma is demented (though showing some signs of recovery but who knows). And that's about it.

The scene where Harima made Eri cry at the temple grounds was really good, though, in my opinion, even if it didn't actually contribute to a happy ending. Another good scene was Harima and Karasuma's fist fight in the class room, now that I think about it. Actually if you judged it solely as a fight forgetting any deeper meanings it would put many action animes to shame.

It's a pity we only got the last two eps of season three, but I guess it can't be helped. Better this than nothing.