Leonardo is bound to the "Ultimate Lackey System." He becomes the loyal follower of Mirabella, a villainess who has been reborn. While Mirabella originally intended to keep a low profile to avoid her tragic fate, Leonardo's radical actions constantly push her into the spotlight. Together, they find themselves clashing with legendary archetypes like the Dragon King, the Divine Physician, and the God of War.As they expose hypocrites, reclaim family fortunes, and resolve various crises, feelings begin to spark between the two. With Leonardo using his System skills to protect his master and Mirabella gradually embracing her own villainous edge, they embark on a hilarious journey of counterattacks and revenge.
