After Transmigrating into a Book, the Villainess Only Wants to Cultivate Immortality

Gu Ran died suddenly while studying for graduate school entrance exams and transmigrated into a book. The Cultivation Chronicles of Yaoguang is a romance novel dressed up as a cultivation story, combining “the childhood sweetheart loses to the newcomer,” “the sect's darling,” and “the wicked junior sister.” Naturally, she didn't transmigrate into the heroine, the sect's darling. Instead, she became the story's most evil supporting female character. She falls for the male lead, gives the heroine a golden finger early on, and later becomes a stepping stone for her. Needless to say, her ending is tragic. Gu Ran, who transmigrated into this world, is at a loss. All she wants is to cultivate. Wouldn't living forever be wonderful? Why bother with romance, especially the kind that could cost her life? But fate has other plans, and the fluffy, devilishly powerful Demon Lord villain is just too adorable!