Yuu's pleasant life with his big sister continues, and slowly but surely, their bond is deepening. She's always there for him, whether they're at home, at the hospital, or . . . in the bath? ! Yuu even gets to see an entirely new side of Chiyo when he comes home to find her drunk . . . But paradise can't last forever. When an unknown demonic creature suddenly makes an appearance, Chiyo's countenance darkens, and her true nature surfaces . . ."--Amazon. com