This is based on opinion. Please don't list it on a work's trope example list.
Tear Jerker / Power Rangers Mystic Force
It's a brief moment, but seeing the quirky Clare and the Sagely Udonna so....broken by Imperios's Dark Wish. It's pretty sad stuff.
What Udonna must must had went through during the Great War as she almost lost everyone she loved and cared about. She lost her sister, her husband is presumed dead, the people who fought alongside him are most likely dead, Daggaron is missing and Bowen is gone with her only hoping that he is taken somewhere safe during the chaos.