After Becoming the Male Lead's Wicked Master, I Turned Over a New Leaf

Two male leads / Younger love interest / Transmigrate into a book

After transmigrating into a book as a cannon-fodder villain who bullied the male lead’s guard as a child, he learns that the guard will eventually turn evil and grind his bones to dust. Desperate to survive, he decides to turn over a new leaf and launches a “top-tier cultivation plan” for the young guard who has just arrived at the manor. Little does he know that his calculated kindness has already made the once-cold boy fall deeply in love with him, binding him tightly to his side.