I Traveled Through the World of Cultivating Immortals to Complete the White Moonlight Mission, but the Male Protagonist Fell in Love with Me After Becoming a Demon.

Lin Yu entered a world of cultivating immortals and completed the mission of Bai Yueguang. After the master of the mission world died, he entrusted the male protagonist to the young Lin Yu. Lin Yu took the male protagonist to become a disciple of the Immortal Cultivation Sect, and then pulled the male protagonist along according to the plot. When the male protagonist grew up, he became a demon and rebelled against his sect. He fled back to the demon world with Lin Yu and became a demon king. He also wanted to marry her. At the wedding, Lin Yu rebelled and killed each other...