Sailor Moon spans 200 episodes, several movies, and the reboot, Sailor Moon Crystal, which closely retells the manga by Naoko Takeuchi. Not only are there high stakes and many creative antagonists, there are many moments of revealing backstory which hit hard emotionally and add additional depth to both the heroes and villains. Even the reveal moments that are heavily foreshadowed are still shocking.
Source:https://www.cbr.com/shocking-sailor-moon-scenes/