Tales of the Martial World: The Mist Ghost

The Protagonist Sacrifices Themself

I want books similar to "Honkai: From the Start, I Became a Faded Elf". I'm looking for stories where the protagonist is a villain but plans to sacrifice themselves in the end to save the world. Original stories or fan fiction are both fine, as long as they fit.

Give Me Angst, Break My Heart!!! Make Me Suffer a Thousand Cuts

Just make it heartbreaking, absolutely devastating.

Tragic Stories!!! I Want Heartbreaking Angst!!!!!

Any Stories Where the Protagonist Risks Their Life to Save Someone Doomed to Die? (·∀·)

Male Leads Who Sacrifice Themselves or Are Seriously Injured to Save the Female Lead

The male lead sacrifices himself or is badly injured to save the female lead, and she cries her eyes out ( •̥́ ˍ •̀ू ) Thanks!