Filia, the daughter of a duke, meets her younger brother-in-law Luca when she is ten years old and suddenly remembers that she lives in an otome game world where she is the villainess destined for a tragic end. With eleven years remaining until the game’s story begins, she resolves to avoid the death route through careful planning. Despite her determination, every attempt to change her fate fails. As the game’s original scenario dictates, Filia becomes a candidate to be the crown prince’s fiancée, and Luca seems to despise her. When the heroine of the game appears, Filia finds herself cornered and tries to escape her ruin flag by arranging a marriage with a background knight. Just as she hopes to slip away, Luca stops her with the declaration that he will not let her go. The story follows Filia’s failed efforts to rewrite her destiny, the hidden intensity behind Luca’s distant behavior, and the possessive, yandere love that grows between them, culminating in a relationship that draws her further into the very fate she tried to avoid.