It is quite rare for the research of the Magic Knights to backfire, but on some occasions even the worst outcome, like a sentient Eldritch Witch Hat, can have its purpose. After attempting to release said experiment into the wild, it was soon discovered that the creature is too intelligent on its own, being able amass small armies of dark mana beasts to serve it, and trying to take over small villages. The curiosity about the creature grew, and in order to be able to study it, the Coral Peacocks closed it up in a large mansion hoping to contain its magic. Unfortunately for them, the sentient accessory still manages to amass armies of demonic mana beasts really fast, so every few weeks, the Magic Knights have to send over squads to cull them.