She is introverted and she thinks she is the main character in a anime but iykyk she is not the most popular girl or at all but she is something she has dark hair and is short, She is a socially awkward and extremely introverted high school girl who desperately wants to become popular and have an exciting school life. Tomoko spends a lot of time imagining herself as confident and admired, but in reality, she struggles to talk to people and often finds herself in embarrassing situations. She can be sarcastic, selfish, and sometimes strange, but she also has a vulnerable side that makes her easy to sympathize with. Despite her difficulties, Tomoko gradually becomes more comfortable around others and begins forming genuine friendships.

Tomoki Kuroki is Tomoko's younger brother. He is generally quiet and often appears annoyed by his sister's unusual behavior. Unlike Tomoko, Tomoki is relatively athletic and has an easier time fitting in with other people. Although he can be blunt and impatient with Tomoko, he still cares about her and occasionally shows concern for her well-being.

She is cheerful, friendly, and socially confident, making her almost the complete opposite of Tomoko. Yuu cares about Tomoko and tries to include her in conversations and activities, even when Tomoko behaves awkwardly. Her kindness and confidence sometimes make Tomoko feel insecure because Yuu seems to have the social life Tomoko wishes she had.

Hina Nemoto is one of Tomoko's classmates. She is energetic, expressive, and interested in becoming popular. Hina enjoys talking about herself and her interests, and her outgoing personality contrasts strongly with Tomoko's awkwardness. Her interactions with Tomoko often create funny and uncomfortable situations.