Kaji is in the same grade as Ayu and Nina, and he's also the school idol. He's seen as cool and always has a pleasant smile on his face. His fans shower him with gifts constantly, and even third-graders admire him.
But this is just a facade. In reality, Kaji is an ordinary guy who dislikes receiving presents from strangers. However, he diligently maintains his "nice guy" image because Ayu, the girl he likes, once told him that’s how she prefers him to be.
He grows closer to Nina after she uncovers his secret. Kaji is introverted and doesn't like revealing his true feelings or thoughts.
Kaji is part of the school's baseball club, and his best friend is Tsujiai.
