Keiichi's classmate. She has a devoted personality and is his closest friend, walking to school with him every morning. She has a weakness for anything she considers "cute" (kaaii) and has a habit of "taking them home" regardless of what they are. When Rena enters her "cute mode," she ignores the laws of physics entirely and becomes impossible to handle.

An upperclassman to Keiichi and Rena. She serves as the class president. While her speech and behavior can sometimes seem like an old man's, she is a high-spirited, reliable big-sister type who is adored by those around her. She makes it her daily after-school routine to play various games with Keiichi and the others in what she calls the "Club." She is ruthless when it comes to winning, often terrifying those around her.

Mion's twin sister, identical in appearance. She lives in Okinomiya, the town neighboring Hinamizawa, and works part-time as a waitress at a family restaurant called Angel Mort. Contrary to her refined, lady-like impression, she is a shrewd character who takes bold actions toward Keiichi and manipulates Mion, proving to be every bit as formidable as her sister.

The only daughter of the Furude Shrine. She lives in the same house as Satoko, who is in the same grade. She serves as the shrine maiden for the Watanagashi Festival held every June. A girl with a mysterious aura, she usually charms everyone with her kitten-like cuteness but occasionally displays a level of calmness unbefitting her age. She refers to herself as "Boku" and has catchphrases like "Mii" and "Nipah~☆".

A lowerclassman to Keiichi and Rena. She speaks with a grammatically suspicious, high-class lady's affectation. While she is competitive and can be cheeky, she is still young and sometimes ends up crying when teased by Keiichi or Mion. She is Hinamizawa's premier trap master; her talents are displayed so extensively during after-school "Club" activities that even Mion fears her.

A mysterious girl wearing shrine maiden clothes with horns growing from her head. She speaks as if she knows Rika, but...

A clinic nurse who exudes a great deal of mature charm. She is interested in the history of Hinamizawa and conducts her own independent research. She seems to be an acquaintance of Tomitake, but...

A woman with horns similar to Hanyuu's. She refers to Rika as a "cat." In exchange for providing her entertainment, she grants Satoko the power of a "looper." She has Satoko name her Eua, but her true identity is entirely unknown.