Souta Kishibe is a childhood friend of Koyuki's. He moved away from her school and became invested in playing soccer. He shares her love of Magical Girls and secretly wanted to be one. One day, his wish was granted and was transformed into La Pucelle. His magical ability is to alter the mass and size of his sword at will.
He is the third magical to die after being severely beaten by Cranberry and pushed in front of an oncoming car.