A second-year high school student. A girl with long hair and a calm atmosphere. She looks slightly sleep-deprived. She is kind and quiet but has a strong core, taking action to save the protagonist.

The protagonist's best friend, a boy with a lighthearted and social personality. He usually makes jokes and lightens the mood, but he is surprisingly cool-headed and observant of his surroundings. He is the first to notice any changes in the protagonist and will step in forcefully if he feels the protagonist is pushing himself too hard. In dangerous situations, he often appears as if by chance, resulting in saving the protagonist's life. While he doesn't talk much about himself, his words and actions suggest he understands the situation, and he occasionally says things that are deeply meaningful. He has a strong friendship with the protagonist and sometimes flatly tells him, "Don't go dying on me so easily."