[Spoilers] Anime that had satisfying endings (no table flip button activated!)

Honestly? School Days.
It's a very M-rated anime based off an H-Game with more bad endings than you can count. Of course I didn't know this prior to watching the series (12 episodes). It had a simple concept at first, then it got complicated, then it just.... it went somewhere else.
Imagine an evil version of "Clannad" if you will.

 

Eventually the writers of the show understood that by the end I was fustrated because I wanted the main character to die a painful death and the original girlfriend to get revenge. So in a craze the 2nd ex girlfriend murders the main character in cold blood and rather gruesomely, then the 1st girlfriend in yandere fashion, kills the ex.... the rest is.... somewhat creepy, but I felt like the writers where like "yeah... we're ticking you off.... GOING ALL OUT"