Sara Chidouin

The protagonist, a second year at Sonobeno High. She is a participant in the death game.

Sara is responsible, mature, hardworking, and stays steady in her conviction to save everyone. Her fellow participants often describe her as strong and dependable with the "attitude of a samurai" due to her strong "take charge, take responsibility" mindset. Because of this, Sara acts as the leader of the group that mostly everyone trusts and relies on. She is especially admired by the younger kids in the group, with both Kanna Kizuchi and Gin Ibushi viewing her as an older sister figure. While Sara can distrust or doubt some of the group, she still continues to work along everyone the best she can.

However, Sara also suffers through self-doubt, often not believing she is really everything everyone praises her to be, as well as occasional selfish thoughts about saving herself and sacrificing the others for her own safety— although she snaps out of it and remains determined to beat the Death Game and escape with everyone. Sara also has a bad habit of putting others' needs before her own, as well as overworking and pushing herself too hard. She tends to ignore and suppress all of her negative feelings and doubts to continue appearing as a reliable figure everyone can lean on, which of course deteriorates her mental health and eventually causes her to break down.

During the Death Game: