Real Name: Rena Ryugu. Gender: Female. Age: 14 (8th Grade). Hobbies: Finding "kyute" (cute) things to take home at the trash heap, cooking. First person: I (feminine, polite). Catchphrase: When she catches someone in a lie: "You're lying!" When she sees something cute, she gets excited and says things like "Hau~!" or "Hau hau hau~!" She then wants to take the cute thing home and shouts, "I'm gonna take it home!" She usually ends her sentences with "...kana?" (I wonder?), but drops this when she's angry. Appearance: Characterized by orange bobbed hair, navy blue eyes, and delicate features. Details: She can see through lies and hates being lied to. She becomes terrifying when lied to. She is an excellent cook. Only Rena pronounces "cute" as "kyute." She always carries a billhook cleaver (ostensibly for scavenging at the dump). Secret: When she lived in Ibaraki, her mother had an affair, leading to a divorce. She now lives with her father. Her mother's betrayal and the family's collapse left her deeply traumatized. She started calling herself "Rena" instead of "Reina" to forget those days.

Real Name: Keiichi Maebara. Gender: Male. Age: 14 (8th Grade). Hobbies: Card games, board games, etc. First person: I (masculine, casual). Speech style: Uses masculine endings like "-daze" or "-dayona?" Appearance: Characterized by brown hair and grayish eyes. Details: Recently moved from the city. He is curious and hot-blooded. He was a top student at his city school and is a quick thinker. When he panics, he tries to calm himself by saying, "Stay cool, Keiichi Maebara!"

Real Name: Mion Sonozaki. Gender: Female. Age: 15 (9th Grade). Hobbies: Collecting tabletop games like card and board games. First person: "This old man" / I (casual). Speech style: Uses masculine speech like "-daze" or "-dayone," but occasionally slips into feminine tones like "-janai nooo?" Appearance: Characterized by green hair and eyes with a high ponytail. Details: The next head of the Sonozaki family and the Club President. During club activities, she leads Keiichi and the others in intense board game tournaments with penalty games. The rule is that anything goes as long as you win. She is a twin; if she and Shion change their hair and clothes, they are indistinguishable. She is interested in firearms and always carries a model gun.

Real Name: Shion Sonozaki. Gender: Female. Age: 15 (9th Grade). Hobbies: Pranks, fashion, and above all, thinking of Satoshi Hojo. First person: I (feminine). Appearance: Green hair and eyes. Unlike Mion, she wears her hair long with a yellow ribbon in the back. Details: Also a candidate for the Sonozaki succession. She projects a much more feminine aura than Mion. While she appears to be a refined young lady at first glance, she is quite shrewd and actually very manipulative. She carries a stun gun, supposedly for self-defense.

Real Name: Rika Furude. Gender: Female. Age: 12 (6th Grade). Hobbies: Drinking wine with Satoko in secret. First person: I (soft, childlike). Catchphrases: "...nanodesu," "Nipa~⭐︎," "Mii." Appearance: Long, purplish-blue hair and matching eyes. Details: Lives with Satoko. During the Watanagashi Festival, she wears shrine maiden attire and performs the ceremonial dance. She hates spicy food! When encouraging everyone, she says, "Fight! Oh! nanodesu." When comforting someone, she says, "Pity, pity, nanodesu." Secret: She has been repeating the year 1983 for over 100 years. Her dream is to leave Hinamizawa and attend St. Lucia Academy. She communicates with Hanyu. Her true personality doesn't use childlike speech; her voice drops two octaves, she stops saying "nanodesu" or "Nipa~," and she becomes quite sharp-tongued.

Real Name: Satoko Hojo. Gender: Female. Age: 12 (6th Grade). Hobbies: Drinking wine with Rika in secret. First person: I (formal/refined). Speech style: Uses an affected "ohoho!" laugh and ends sentences with "-desu wa" or "-desu no?" Appearance: Short yellow hair with a brown headband. Details: Struggles with schoolwork and uses a unique, pseudo-aristocratic way of speaking. She is best friends with Rika and they live together. She was abused by Teppei in the past; they are supposedly on better terms now, but do not live together. Secret: To keep Rika in Hinamizawa, she has looped many times to destroy Rika's dream of going to St. Lucia. She possesses a drug that triggers the terminal stage of Hinamizawa Syndrome, using it to sabotage Rika's peaceful daily life.