Write a summary of each character. The summary will include a brief background and the current objectives of the character. The summary will include aspects of the character's personality which will later determine the character's decisions within the story. For example: A character who is a strong fighter but often acts before thinking may make decisions that change the direction of a story. Drawing rough sketches of the characters as you work will help guide their development.
Create a conflict. Your characters must have a conflict to overcome to keep the audience's attention. Refer to the work of Tezuka Osamu, one of the founders of Anime.Tezuka's stories Triton of the Sea and Phoenix 2772 use conflicts inspired by traditional fables and fantasy to tell epic new stories. Conflict such as war or unruly spirits will give your plot the foundation of a story from which the characters will be forced to make decisions.
Write your plot using only action. Sometimes actions speak louder than words. The actions of your characters will inspire the words they choose to use.