Pupa

Growing up with an abusive father, Utsutsu is highly protective of his younger sister Yume. One day, Yume sees a red butterfly and contracts the strange Pupa virus. She begins to sprout grotesque wings and to indiscriminately attack both animals and humans. Hoping to find a way to stop the advance of the virus, Utsutsu seeks out Maria, a researcher who knows the secret of Pupa. He decides to sacrifice his own body as live bait for the sake of saving Yume.

Super sadly this is the only one of its kind