Yori is a humanoid shark living in the depth of the seas with other humanoid beings such as mermaids, other humanoid sharks, orcas, seahorses, fishes, and etc. There is a hierarchy of species with the kings and queens of each species ruling the world. Sharks are the second kind above the hierarchy under mermaids only because of the rulers powers. Some species known in the sea for being one of the strongest, that being Yori.