Cultivation: The Male Supporting Character [Dual Transmigration]

There's one kind of person who always seems to have it all: someone else's kid, who's better than you at everything and makes your entire childhood a dark mess. At long last, one day, you transmigrate into a book and become its top male supporting character, the male lead's most trusted sidekick. You think you'll finally get to make a name for yourself and rule the world, but then you realize... Huh? Why does the male lead seem so out of character? Why is he acting so much like... so much like... Under the shadow of this winner in life, he's destined to be single for the rest of his life, damn it! Winner in life: Let's find partners together. Loser in life: Ha. You mean, you get to top me?