My Ex’s Sister Is Mine

At a manor ball, Viola Thorne catches her boyfriend Julian Lancaster cheating with Sebastian. She fakes amnesia after a fall to seek revenge. Julian dumps her on his sister Livia. Livia repeatedly risks her life for Viola, and they form an alliance. Viola is heir to a top conglomerate and exposes the traitors. Livia discovers proof Viola feigned amnesia, loses faith and tries to run. Viola holds her back, and they claim power side by side.