After I Transmigrated, I Grew Stronger by Pranking the Big Shots

The day I transmigrated as Xiao Yan's cousin, Nalan Yanran showed up to break off her engagement. Just as Xiao Yan was about to declare, "Thirty years east of the river..." the System suddenly activated: "Strongest Prank System successfully bound!"

"Beginner mission: Sing 'Conquer' to Nalan Yanran at the top of your lungs. Time limit: three minutes."

"Failure penalty: Instantly transform into an ornate, seven-colored glass spittoon."

With the eyes of the entire clan on me, I trembled as I started singing: "Just like that, you've conquered me..."

When Nalan Yanran's sword qi went out of control and smashed the roof beams, I closed my eyes in despair.

Instead, I heard the System announce: "Prank successful! Reward: Calamity Poison Body (Youth Edition)."

Wait, why is Nalan Yanran looking at me as if I'm a kindred spirit she's been separated from for years?