Ai Imari (伊万里 愛 Imari Ai) also known as Maria, is a mysterious researcher who seemed to have knowledge about the Pupa virus and is currently doing experiments regarding it.
Pupa
The "life-and-death sibling" story follows Utsutsu and Yume Hasegawa, a boy and his little sister who find themselves all alone. One day, Yume sees a mysterious red butterfly and her body undergoes a strange metamorphosis—into a creature that eats humans. Utsutsu struggles to find a way to restore his sister.
