Most emotional anime you ever watched?

Pokémon.
The emotional moments are few and rare and i've only watched the first 6 'seasons'.

Any episode where Ash gives up a Pokemon he actually cares about, like Butterfree or Charizard.
Not gonna lie those episodes made me tear up more than a lot of other anime I've watched. It's not overly dramatic or tragic, which isn't a bad thing, but sometimes simple emotions just hit you the most. ;_;

Looking @ you, Studio Ghibli.