Mediaeval animal roleplay

Infomation

The island of Mistmantle is an isle, and the seas surrounding it are shroud with mist, hence the name. The mists act as a form of protection for the island, and for the island's inhabitants. An animal of Mistmantle who leaves the island by the sea, cannot return to the island by the sea, for the mist prevents them, and few have dared to attempt such a deed.
The island of Mistmantle has pale golden shores, where the otters tend to frolic, fish, and row their boats. Anemone woods and the Tangletwigs are areas of woodland where squirrels and hedgehogs live, and the moles create their abodes underground, usually.
The Mistmantle castle is a castle of chambers and turrets, where the king and Queen reside with their children, and where animals of the circle, and animals who work in the castle live. The topmost turret is where the priest lives, and the festival chamber is where the festivals and events are held. Only captains, or animals with permission can roam round the royal chambers, and there is a grand throne room. The walls are hung with tapestries and threadings, depicting the island's stories and heroes in wonderful thread, embroidered with love, devotion, and passion.
Secret tunnels crisscross under and through the castle, some leading to the Old Palace, created by moles during an ancient king's evil reign. Other tunnels, these ones filled with dread and evil, lead to a terrible place. The place was a dungeon, where the enemies and victims of the ancient evil king were cast into, to suffer and die. The dungeon has a pit, where animals were thrown into (the fall killed the animals), for the dungeon possessed an evil ambience, and nourishes the flaws within every animal, turning them to the darkness in their hearts. 
A squirrel called Husk, searching for the Old palace, instead stumbled upon the evil dungeon, and the darkness fed the darkness within his heart, and his mind was overtaken with madness, ambition, and wildness. He was defeated by the memories of his own actions, and fell into the pit. Now, the dungeon is lit with candles, blessed and cured of its evil by the late brother fir, now deceased.
The island is blessed by the Heart. The heart, you could say, is the entity which created everything, and it is love, hope, and happiness. The animals pray to the heart, and worship the heart, for the heart protects, keeps, and nourishes them and the island. There is the heartstone, a stone shaped as a heart, and it can only be held by a priest. If the heartstone ever leaves Mistmantle, hope is lost.