Their first interaction with each other was in a coffee shop where Naoya worked as a barista and she is very anxious when talking to him. Kō often played video games with her father during her childhood, and her father supports her hobby to game. Later in the manga, she is revealed to be an otaku who is into the shojō genre, similar to Tarō Kabakura. When Kō plays, she becomes oblivious to her surroundings and forgets how long she's playing as long as she is distracted by it. She also recognized the video game character Narumi Momose mentioned as she was going to meet up with Naoya. She is very fond of video games as shown both in the manga and in the anime. Later in the series, she meets Naoya Nifuji in the coffee shop he works for and becomes gaming friends with him, in which she helps him level up his character. She is not fond of talking, hence she does not have any friends or any form of social media. Despite this, Kō still hopes to make friends.
She does not usually socialize, which is why she is often anxious when talking to other people, and cannot look directly into their eyes. Kō prefers being alone and she's always apologizing to people for no particular reason.
She is frequently seen with white headphones around her neck.ĭue to her clothing preferences and her height, she is often mistaken for a boy. Her clothes is usually a cream-colored sweater with a light blue blouse underneath, and gray slacks with sneakers. Kō is a young woman with short brown hair that has long bangs hanging over her face, dark green eyes, thick black eyebrows, full-framed glasses and a beauty mark under her left eye.