Saikano didn't really give me an emotional crush because it took so fucking long to do everything.
Akemi was the only one that was sudden. Everything else was pulling teeth. It could have been 6 episodes long.
But it was a consistent layering of misery, so now everything else is hilarious by comparison.
School Days fucked me up more. Almost entirely because there was hope for most of the characters to come out [pun]"ahead"[/pun], but then dashed any hopes you had. Also I'm a romantic.