Natsuya Kirishima

As the older brother of Ikuya Kirishima, this junior high student makes his first appearance in the second volume of Kouji Ouji's light novel series, High☆Speed!. Introduced as a key supporting figure, his arrival adds depth to the family dynamics within the story. Through his relationship with his younger brother, he serves as a meaningful connection to Ikuya's personal history and development throughout the series.