After losing her parents in a tragic accident, Yukimine Kokoro, the sole heiress to a vast fortune, is swiftly confronted with the task of selecting a fiancé from a peculiar lineup arranged by her great uncle to secure her inheritance. Struggling with the sudden whirlwind of events and haunted by speculations surrounding her parents' demise, Kokoro finds herself in a surreal world where individuals sport animal heads instead of human faces, including her potential suitors. As she grapples with this bizarre phenomenon, Kokoro must navigate through the enigmatic circumstances to make a decision that will shape her future amidst the unsettling and unconventional environment.