Mau Balas Dendam Malah Baper

Leon was 20, maxed out at level 999, and ready to raise some hell. But his ditzy mom screwed up the files, turning his savior into his target. His mission? 'Troll the enemy to death.' So he pretended to be weak, got close to heiress Serena, and drove her mom up the wall... Did he ever figure out this huge mix-up later on?