Student of A Class, The oldest son and heir to the Hijirikawa Group. He was raised in a strict environment, making him very serious. His way of thinking is a little old-fashioned, and he’s unable to show his real self due to his serious nature. He seems to have some form of rivalry going on with Ren, whom he shares a room with. He plays the piano. Masato shows his soft side when Haruka is involved.