Kotone is a classmate of Haruto and Yuzuki who is known for being demure and timid. She has braided hair and wears glasses to hide her actual beauty. Kotone excels in sewing and admires Yuzuki. During an outing to gather apples for the festival, Kotone arrived with her hair unbraided after hearing a comment from Haruto. He found it appealing and she decided to leave her hair unbraided from then on. Later, when Haruto was rebuffed by Eba at the end of the outing, Kotone misunderstood the situation and held his hand while confessing her feelings. However, after realizing that he truly liked Yuzuki, she understood her mistake and waited for a proper confession at the festival. Recently, it was revealed that she started dating Himuro.