Radiata Stories, the human-side ending.
The Silver Dragon, one of two dragons that perpetuate a cycle that wipes out the human race to prevent them from advancing too quickly, becomes empathetic towards humans and prevents the arrival of his counter-part in order to stop the cycle. In order to do so he is forced to sacrifice a girl, Ridley, who would act as a vessel. Thus saving humanity from utter destruction.
No that's not the ending. The ending is that Jack, the main character, throws a hissy fit and kills the Silver Dragon, because of the girl he sacrificed. Who is this girl? Someone Jack loves? Sister? Childhood friend? Nope, a girl he was a knight recruit with, who spends much of her time being very abrasive towards him, that he doesn't even see much of. A completely hateful and bland character.
Does this accomplish anything? Bring her back to life? Save the world? No, she remains dead, the Silver Dragon already saved everyone for you. All you accomplish is killing an ancient and empathetic creature of unimaginable wisdom and power over a girl that nobody likes. Woo.