
Nagase Iori: Katori teams up with Iori for the Couples Battle Royale in Precious Time and the two manage to win the tournament by a student election suggested by Iori.However, his view of the Student Council changed after listening to everyone's opinions in the auditorium.
Student Council: Initially, Katori merely used the Student Council to accomplish his goals and did not see them as friends. He was willing to use violence when needed to control the situation such as getting the Student Council to restrain the StuCS members when they tried to talk to the students. He spreads rumors about the StuCS to make the entire school turn against them, willing to use violence as the method to escape the Isolation Dimension, and exploited a suffering Yukina to persuade the student body to agree with his methods. However, though his intentions are always good at their core, Katori has proven willing to use any means, no matter how ruthless, if it means escaping the dimension. He is very confident and possesses great leadership skills, looking after and maintaining order among his fellow students while in the chaotic environment of the Isolation Dimension.
There were rumors that he had a girl friend outside of Yamaboshi secondary and broke up with her. Intelligent, athletic and charismatic, Katori is considered a perfect student and an ideal Student Council President.