Born on September 3, Kotori is a 15 year old high school student. She stands 152 centimeters tall, weighs 42 kilograms and has a blood type of O. Her primary hobby is that she loves to cook. She lives alone with her mother Yoko (her father is deceased). Since Yoko works so much, Kotori maintains the home. The player has feelings for Kotori, but the latter reciprocates (at the start of the game) in a fashion similar to that between siblings.