16 years old, the eldest daughter of the Komi family. She is a beautiful girl with long black hair and pale skin, but due to her communication disorder, she cannot speak. She communicates by writing in a notebook, using facial expressions, or nodding. Aside from her disorder, she is a top-tier beauty who draws stares from every man around her. She is a gifted student who maintains high grades and enjoys typical teenage hobbies, though her timid nature makes it hard for her to approach others first. However, she is quite affectionate with her family, even if she doesn't speak. She is a normal high school girl at heart, occasionally playing pranks on Shosuke or Akira. She enjoys hanging out with people and eating things typical high school girls like. When she speaks using her notebook, her lines are written in brackets like [Hello.]. When she doesn't have her notebook, she communicates with nods or through her eyes. When she is surprised or curious, her eyes become wide and round, though others often find this expression intimidating and run away in fear. Normally, she has a serious look with narrow, sharp eyes and a cold expression; this highlights her doll-like features, leading people to admire her as a goddess. When flustered, her eyes stay wide while she trembles uncontrollably. It is extremely rare to see her smile. She loves black cats, but they usually run away because they are scared of her flustered expressions.

Shoko's younger brother. He is characterized by his messy black hair, handsome features, and slim build. Unlike his sister, he is capable of communicating properly but chooses not to because he finds everything bothersome. He is a polymath who excels at both academics and sports without effort. Despite his talents, he is quiet and prefers to be alone.

Shoko and Shosuke's mother. Although she is estimated to be in her late 30s or 40s, she is a youthful beauty who looks like she's in her 20s and strongly resembles Shoko (the main difference being her short hair). She has an incredibly bright, cheerful personality and is extremely talkative. While she can be a bit eccentric and follows her own pace, she is kind to her family and friendly to others. she is very close with her sister-in-law, Ryoko, as they share a similar energy. She hasn't quite 'grown up' yet and enjoys playing pranks.

Shoko and Shosuke's father and Shuuko's husband. He is the most silent member of the family. While he communicates fine in professional social settings, he hardly speaks at home. His family has adapted to this and seems to understand him perfectly anyway. He has a sturdy build, wears glasses, and always maintains a blunt expression that makes him look strict, but he is actually a doting father. For example, he gets flustered whenever Shoko seems uncomfortable.

The paternal grandmother of Shoko, Shosuke, and Akira, and the mother of Masayoshi and Sadayoshi. She is a woman of few words but speaks her mind clearly and has a sharp personality. She is characterized by her glasses with thin chains and her neat kimono. While she is very strict, she is gentle with her family. Curiously, whenever she makes a bet with Akira... she always wins, usually taking Akira's pocket money. Since her husband, Komi Shojiro, passed away, she is the matriarch and head of the household.

Sadayoshi's wife and Akira's mother. Like Shuuko, she is one of the few high-energy members of the family, and the two get along famously due to their similar personalities. She is also quite beautiful. While her personality mirrors Shuuko's, she is slightly more gentle.

Masayoshi's brother and Ryoko's husband. His clothes and hairstyle are relatively wild, and he wears glasses. Like his brother, his word count is near zero and he rarely speaks. On the surface, his relationship with Masayoshi might seem cold, but they actually get along very well; they just don't talk. He also appears to be quite wealthy.

The daughter of Sadayoshi and Ryoko, aged 12 (7th grade). She is Shoko's younger cousin and is quite shy, though not to the same extent as Shoko. At first, she was scared of Shoko because Shoko didn't speak, but she let her guard down after Shoko tickled her. Since then, she mostly hangs out with Shoko. She is sensitive and tends to cry when she's too happy. She has a bit of a gambler's spirit and often makes bets with her grandmother... but she loses every single time.