The Overpowered Hero's Golden Fingers Are All My Secret Identities

[Transmigrating into a book, with a many-secret-identities, multiple-personalities protagonist x a reborn, gloomy, genuine male ghost love interest] After being struck by lightning and transmigrating into a book, Jiang Zhiyu unexpectedly got two Systems. One was a “golden finger” System. Instead of giving him a golden finger, it made him take on secret identities and serve as golden fingers for the overpowered male lead. The other was a “love rival” System, which made him raise hell and compete with the overpowered male lead for his partner. Jiang Zhiyu: ...Just destroy the world already. In the original story, the overpowered male lead was a heaven-blessed, handsome, strong, and tragic prodigy, born with extraordinary talent and destined to rise above everyone else. Unfortunately, a calamity destroyed his talent and sent him plummeting to rock bottom. His beloved rejected their engagement, his best friend betrayed him, and even after he died, he nearly got refined into a weapon. And the person who killed him was Jiang Zhiyu. Jiang Zhiyu: I think I'm a little dead. His System, meanwhile: Key plot point detected. Host, play the male lead's beloved and break off your engagement with him! Jiang Zhiyu: ? From then on, whenever the male lead was humiliated, Jiang Zhiyu not only had to kick him while he was down, but also disguise himself as a master and give him secret manuals. When the male lead was killed and turned into a ghost, Jiang Zhiyu not only had to stab him a couple more times, but also disguise himself as a delicate admirer and risk his life to save him unconditionally. When the male lead fell into a trap, Jiang Zhiyu not only had to drug him, but also disguise himself as a fairy from his dreams and take the initiative to marry him in a ghost wedding. Much later, Jiang Zhiyu successfully stole the male lead's partner, and the other man returned as an ultimate male ghost to take revenge. Jiang Zhiyu was about to run away when the love rival System forced him into a wedding. On the wedding day, powerful cultivators from the mystic arts world gathered, but the male lead suddenly appeared to steal the bride. Powerful cultivator one: I knew you'd come to steal the bride! Powerful cultivator two: This is a trap to catch you! Powerful cultivator three: We used Jiang Zhiyu as bait, and you took it! Jiang Zhiyu, completely out of the loop: “Wait... Did something happen that all of you know about, but I don't know anything about?” The ensuing battle shook heaven and earth. As the love rival who had stolen someone's partner, Jiang Zhiyu was abducted by the male lead and thrown into the heart of the ghost stronghold. Just as he was wailing that he was done for, the male lead locked him in a luxurious gilded cage and recited all of his secret identities. “...Jiang Zhiyu, how are you going to save me this time?” Theme: Believe in science.