In her first day, since Rai's arrival at Ashford Academy, Kallen arrived at Rai's place to lead him to the student council room by Milly. There she later suggested to go to different places that would trigger his memory, leading Milly to vote for Kallen as Rai's caretaker, which Shirley and Nina agrees. If the player chooses to have Kallen as her caretaker, Kallen herself becomes doubtful. If the player chooses not to have Kallen as her caretaker, Kallen sees him having doubt and decides to accept the role of his caretaker.