CHARACTER INPUT DEVICE, CHARACTER INPUT METHOD, AND CHARACTER INPUT PROGRAM

Efficient handwriting input is performed. A character input device includes: a handwritten character input unit that receives a handwritten character input operation; a controller that outputs a prediction candidate in which a replacement character is replaced, the prediction candidate corresponding to a series of handwritten characters, when the replacement character exists in the series of handwritten characters input to the handwritten character input unit; and a candidate display that displays the prediction candidate.