最強の姉~弟と桝甚家の未来はこの手で守る~

Eighteen years ago, Quincy’s mother gave birth to Quintus, while Lucia, her mother’s servant, swapped their babies. Quincy secretly returned her real brother to the crib. Years later, Quincy, now a musician, discovered Lucia’s betrayal and gathered evidence, proving Lucia’s ill intentions. During a family banquet, Lucia and Cloudy revealed the swap, but Quincy exposed the truth: she had returned Quintus to his rightful family, proving him the Shane heir and holding Lucia accountable.