My Fiancé Loves My 2-Year-Old Sister - Episode 12

At Claire’s engagement party, her fiancé Adrian dumps her, claiming he loves her 2-year-old "real heiress sister" Lily and fakes Claire’s father’s AI voice to prove it. Claire’s mother exposes the lie, revealing Lily is a career grifter. Eventually, Adrian ends up in prison for his greed, Lily gets arrested, and Claire lives peacefully with her real little sister.