Nomura Touri

A second-year high school student who happened to be on the SHEEPIII's underwater voyage along with her sister. A cheerful and energetic person. She is good at PE and modern Japanese literature. Touri is very attached to her sickly sister and feels obligated to take care of her. Still, she doesn't really understand her sister.

Two weeks ago, Touri uttered that she wanted to go on a voyage and got a ticket from her sister afterwards. This voyage was not an ordinary one, but the first one of this innovative submarine. A ticket on it was only available to a limited few dozen persons. The majority of them were project-related individuals. Touri was therefore perplexed as to how her sister acquired such a rare ticket. Little did she know, to which nightmare her wish would lead...

Spoiler

In the past, right before the "Fourth Day" incident, she visited an oceanarium with her family: her mother and sister. On the way back, a supernova explosion of Betelgeuse occurred, which led to a massive traffic incident. It entangled Touri and her family as well. As a result of triage, she received a green tag, whereas her mother got a red one, and her sister got a black one. Her mother asked Touri to swap her tag with sister's one so that the sister may live instead of her. Touri made the decision to do just as she was asked and developed trauma as a result.