Kingdom Hearts II Concepts

Mental condition of when someone forgets almost all of his or her past, including his/her identity. Some anime characters have such an allingment.

The Heartless Emblem is usually on/wore by a Heartless or someone that controls them. The emblem is also sometimes seen on buildings that are associated with them.

An Illusion is a condition of being deceived by a false perception or belief.

Magic is an often used term in fiction. It is the concept of affecting the universe through supernatural methods and breaking the physical laws.

In the Kingdom Hearts Franchise, when some poor soul becomes a Heartless after he's beaten, the victim's body turns into a Nobody. The symbol can be seen on buildings that are involved with them.

This is the Organization that controls all the Nobodies that Sora and friends face. The 13 people who run the Organization are Nobodies themselves.

Usually special animals that have the ability to speak to humans. Talking animals are a big part in several animes and mangas