Delusional Sister Thinks She's the Female Lead, So I Ruined Her Life

After my sister fell into the lake, she became a completely different person. She kept babbling every single day about how she was "the Chosen Female Lead" of some destined romance novel.

She believed her sole purpose in life was to save a tragic, broken male lead. And she was willing to sacrifice our family’s entire fortune, and even our lives, just to end up with him.

In my past life, as we stood before the cold corpses of our parents, I shook her shoulders and screamed, asking why she had ruined us.

She answered by driving a knife straight into my chest.