My Sister the Werebeast

While their parents are off adventuring, older sisters Mira and Rosie are tasked with watching their youngest sister, Peanut. However, Peanut is going through some changes that neither Mira nor Rosie can explain. As they struggle to hide Peanut's new powers, rumors of a werebeast attract the unwanted attention of a monster hunter, and Mira and Rosie must defend Peanut from harm.