Character Relationship Diagram is a free app that lets you create a family tree or character-based diagram for any type of novel, manga, movie, drama, game, historical figure, or any other type of character. You can add any number of people and any number of relationships between them, and you can add any information that you want to remember about them. You can add their birthdays, favorite colors, pets, and even a photo of them. You can set the background and the text font and color, and you can set the text and the arrow color. You can set the line color and width, and you can adjust the canvas size. You can add an image, a name, a memo, and even a nickname. You can connect two people with a line and an arrow to show that they are connected. You can add multiple lines to a person to show that they are a parent, a child, a brother, or a sister.