This category is for anime not based upon previously published material.

• If uncertain as to which anime to add to this category, check the credits to see if an "based on xxx by yyy" or a similar credit is given.
• All sequels are automatically considered adaptations since the sequel must be based on the original story.
• See Academy Award for Writing Original Screenplay and Academy Award for Writing Adapted Screenplay for examples of adapted and original screenplays. Note that even extremely altered screenplays such as O Brother, Where Art Thou? and Apocalypse Now are considered adapted.