I Became the Doomed Sister of a Mary Sue Heroine

Transmigrating as the sickly older sister destined to die young? Not on Song Tingwan's watch. While her sister is prophesied to become the legendary Feng Aotian—a heaven-defying cultivator whose tragic backstory requires dead family members—Tingwan has other plans. Hiding her genius as an outer sect disciple, she secretly becomes the realm's most sought-after alchemist, determined to rewrite fate and send her sister to glory without the usual corpse-paved road. But when Tingwan sacrifices herself to save the world, everything goes sideways. Her devastated sister creates world-shaking sword tec…