Been re-watching a couple old anime favorites and goddamn.

First, the lesser well known incident that I recall making me tear up something dreadful, was the death of Aoshi's Oniwaban in Rurouni Kenshin. They all gave their lives to try and protect their Leader but it was in vain.

A more well-known heart crusher is this.
(SPOILER)

hAKUUUUUUU. *wails*