Mao Nonosaka

A classmate of Yukiteru at Umezakiri Municipal Middle School. Her hobby is taking photos with her mobile phone. She speaks in a refined manner. She is a friend of Hinata and cooperates with her, understanding the circumstances of the survival game. She was stabbed by Yuno with a cutter but survived. She has lesbian tendencies and her eyes sparkled when she realized she could enter the hot springs with Hinata.

Like Hinata, she participates in the search for Yukiteru and the battles against 8th's subordinates along with Akise and Kousaka. She was injured by Ai's knife throw, but appears to have fully recovered by the time of the battle with 11th. She is shot and killed by Yukiteru while assisting Akise, who was protecting 8th.

Her diary when she became a Future Diary holder was the "Love-Love Hinata Diary," which recorded Hinata's "growth."