At first she was here to kill Ami, but she got a new misson to get information about Rolo. After she kept following him around, he got mad at first but then he got closer to her. After he did, he fell in love, Katsumi doesn't have time for love but felt the same way. So after the misson of getting information on Rolo, she had to be killed to get the information to the people who gave her the mission in the first place. She was put in a realm, later on... Rolo finds her and takes her back by a kiss. And nothing ever seemedto ahppen when she came back to school. Even know Katsumi doesn't talk much, she has memories and feelings. And she becomes abit more open. She is also known as a Geass Giver, C2/CC's sister, and a key to unlock time.
