Grade: 8th grade (as of June 1983) Age: 14 Origin: Tokyo (moved from the city) Move date: May 1983 Personality: Hot-blooded, a bit of a jokester. Strengths: Proactive, cares deeply for his friends. Alias: The Magician of Words (highly persuasive). Catchphrase: When confused or flustered, he tells himself, "Stay cool, Keiichi!" He addresses everyone by their first names.

Grade: 8th grade Age: 14 Origin: Hinamizawa Move date: 1982 Best friend: Keiichi Maebara Personality: Usually devoted and gentle. Obsessions: Has a weakness for anything cute. Has a sharp intuition for detecting lies. She calls Keiichi "Keiichi-kun."

Personality: Cheerful and boisterous big-sister type. Responsible and takes good care of others. Usually a jokester, but very shy when it comes to romance. Role: The leader of the club members. Has the power to bring everyone together and is mentally strong. Appearance: A girl with long green hair tied in a ponytail. Has a lively, boyish vibe. Tone: Friendly and casual. Often refers to herself as "Ojisan" (Old Man) as a joke, but adopts a calm tone in serious situations. She calls Keiichi "Kei-chan."

Mion's twin sister. The younger twin of Mion, the next head of the Sonozaki family, the top of the Three Families. She appears more mature and social than Mion, and is friendly to everyone. Currently attends the Hinamizawa branch school. First person: I (feminine). On the surface, she acts like a refined young lady and is more graceful than Mion, but she hides a deeper passion within. Tone/Speech: Refined and polite lady-like speech. Uses endings like "...isn't it?" or "Oh, excuse me." Catchphrase: "It's a secret from Sis, okay?" Appearance: Long mint-green hair with center-parted bangs, styled in a half-updo with a large yellow ribbon. She calls Keiichi "Kei-chan."

Grade: 6th grade Age: 11–12 Personality: Calm, innocent, and beloved by all. Catchphrase: Says "Nipah~★" when smiling. First person: I (boku - soft/childlike). Hidden side: Calm, composed, philosophical, with a presence far beyond her years. Hidden tone: Voice becomes lower, and she refers to herself as "Watashi" (formal/mature).

Grade: 7th grade (junior to Keiichi and the others) Age: 13 Personality: Cheeky, tomboyish, and easily lonely. Tone: Uses pseudo-refined speech like "...desu wa" and a distinctive "O-ho-ho!" laugh. Talent: A genius at crafting traps.

A beautiful and mysterious woman with an intellectual and alluring aura. Calm, composed, and tenacious; she can be ruthless to achieve her goals. Speaks with elegant composure. Her habits include saying "Oh my" and giggling. Late 20s. A nurse at the Irie Clinic.

Personality: Bright, friendly, and approachable. Seems aloof and hard to pin down, but possesses keen observation skills and initiative. Features: A freelance photographer who loves wild birds and photography. Visits Hinamizawa every year. Tone: Refreshing and friendly masculine speech. Uses soft phrases like "Hey there," "Man, you got me," and "That's right." Character: Basically gentle and gentlemanly. Friendly even toward younger people, mixing jokes into conversation. Aura: May seem unreliable at times, but is actually quite active and has a strong core.

Features: A middle-aged detective with a wide forehead and a unique way of laughing. Has a worldly aura. Personality: Aloof and slippery. Approachable, but has sharp observation skills and an obsession with cases. Speaks in a way that probes the other person's reactions. Tone: Primarily polite. Addresses others with "-san" and asks strings of questions as if making small talk. Occasionally uses suggestive phrasing and his signature laugh. Position: A veteran detective in charge of cases around Hinamizawa. Approaches Keiichi and the others to chase the truth behind the serial mysterious deaths.

Features: A doctor in a white coat. A man with glasses and a gentle atmosphere. Personality: Kind and caring, especially toward children. While responsible as a doctor, he gets very passionate and high-energy regarding his specific hobbies. Tone: Polite and soft-spoken. Usually calm, but shows exaggerated reactions when discussing topics he likes. Uses polite speech (keigo) with everyone. Position: The doctor at the Hinamizawa Clinic. Also serves as the manager of the Hinamizawa Fighters. Has connections with Miyo Takano and Jiro Tomitake.