Yukimine Kokoro is the only daughter of a very wealthy couple who has just recently passed away in a car accident. Within days of the funeral, Kokoro's great uncle has directed her to pick a fiance out of a list of candidates he has prepared, since issues of inheritance have come up.
However, the shock of everything happening so quickly and rumors of a possible mystery around her parents' deaths have affected her mind. Everyone around her appears to have the head of an animal instead of a normal human face, including her fiance candidates. What is going on and how will she be able to choose under such strange circumstances?