Chiaki Nanami

A student of Hope's Peak Academy's Class 77-B, and a participant of the Killing School Trip.

Chiaki normally has a quiet and sleepy disposition, but she becomes a lot more lively when discussing games and concentrates hard when playing. She has a number of unusual habits, such as dozing off while playing games and taking long pauses during her conversations to think about everything she wants to say. She sometimes even sleeps while standing and forgets to breathe when she's playing games. She also quite often uses gaming terms and references, and has a habit of ending her sentences with an uncertain note, such as with "...I think", or "Maybe...". Hajime has told her that he wishes she had a more positive catchphrase.

Chiaki is very calm, and she once mentioned that she has never screamed. She often helps Hajime Hinata during the Class Trials and provides important points. She can be stern and bluntly honest, even at times forgetting to take other people's feelings into consideration. However, Chiaki truly does care about and wants to protect everyone. She dislikes killing more than anything and she gets very serious about the topic. She is the nicest towards Monomi and she is very understanding towards Nagito Komaeda, even though his actions frustrate her.

Nanami is actually revealed to be an AI created by Alter Ego to be a mole for the Future Foundation.