Setsuka Chiebukuro (Chained Hope)

Personality
Setsuka Chiebukuro is an outgoing and friendly woman, 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.

Prologue:
Setsuka was one of the 15 students who arrived and introduced themselves at the airport. As they all arrived at the island, they encountered their tour guide, Monokuma. Monokuma gave them the rules and a map on a device called the Monopad, and Setsuka and some others entered the dining hall, where Mikado Sannoji made a feast for them out of magic alone.

The group then headed down to the beach they passed by earlier, deciding to make their day complete with a beach party. Setsuka participated in a water fight with a few others, leaving around halfway through.

She arrived at the hotel lobby as soon as Monokuma told everyone to, and saw him glitching. As he presented their circumstances and the killing game, panic swept over the group, and Setsuka tried her best to ease the situation. Upon her suggestion, everyone agreed it was better of they rested in order to panic less.

Chapter 1:
On the next day, Monokuma informed the students about a plaza, to which Setsuka decided to go to the store with Mikan Tsumiki and Sayaka Maizono to get medical supplies. Afterwards, they went to the storage room, where after some investigation, were interrupted by a loud roar.

Upon heading outside, they saw Mikado facing off against a Monobeast. Mikado justified this by saying he wouldn't be violating a rule, but Setsuka and several others, save for Kaito Momota, urged him to give up. He eventually does, but not before getting shot in the leg as a warning.

On the third day of the killing game, some people quickly realized Nori Akamine was missing. Setsuka and Akane Taira set out to look for her, and found her in the shop, trying to find supplies. Later that day, as the group was investigating, Setsuka overheard Keiji Shinogi and Ibuki Mioda discussing a potential concert, to which she joined the conversation and agreed to help make it. They called Monokuma to organize a stage for them, and he agreed, and also let them in on a secret - that a motive would be introduced soon.

Moments later, Monokuma called everyone to the plaza, and told them that one of them was a traitor. He told them that if they killed this traitor, they'd all be let free, but that after a certain amount of time, the traitor would kill someone. The group began to panic over the thought that they were on a time limit, but Setsuka managed to calm most of them down, suggesting that they should try and befriend the traitor, stopping any murders.

Afterwards, Setsuka along with Sayaka, Maki Harukawa, and Akane all decided to take a break at the spa, later joined by Ibuki and an unwilling Kokoro Mitsume. There she noticed windows in the changing rooms, which would later become relevant for the trial.

On the night of the concert, Setsuka gave the introduction to the two performers, Ibuki and Sayaka. After their performance, and a group hug from Kaito Momota, Setsuka suggested all the girls go to the spa again. They all complied and followed her, finding the door was strangely locked. After asking Monokuma to open it, they followed a blood trail and discovered Mikado's body.

During the investigation, she took it upon herself to guard the crime scene, while also giving investigation pointers.

In the class trial, she leads the discussion most of the time, and causes a major split when she accuses Ren of being the killer for knowing about the food being delivered to Mikado. It turns out she was mostly correct, with Ren setting off the events that would end in Mikado's suicide.