Setsuka Chiebukuro

Personality
Setsuka Chiebukuro is an outgoing and friendly women, who's main goal during the killing game is to both ease the stress of the situation, and to ensure the survival of everyone. She goes about this by organizing events and trying to help the scared people by reasoning out with them why they should keep moving forward. She also tends to tease her fellow students, but means no harm behind it beyond just wanting a good laugh.

Setsuka also has a serious attitude when the situation calls for it, using reasoning instead of emotion when she speaks. She shows herself to be decently intelligent despite her usually cool and laid back attitude, and always does her best to help in the class trials. It's in this state that she can tend to lose her cool, specifically at Ren Shirogane, who she can't stand.

She also shows herself to be secretive, keeping what exactly her eye is a secret even after revealing it to her friends. Later in the killing game, she becomes semi-distant, hiding certain things she figures out from the others.