[SSJup81]

I'll go with the all the series based on Clannad. You know, Clannad, Clannad~Afterstory~, Clannad movie, etc. Didn't check to see if anyone else said it.

From the little I remember, Kanon was really dramatic.

Nogizaka Haruka no Himitsu was dramatic at times, even though it seems to be primarily comedy.

Cowboy Bebop was dramatic at times.

Fruits Basket, definitely.

And that's all that's coming to mind.