He is a student of Class 3-1. He is introduced as the antithesis of Fuutarou Uesugi in terms of appearance, personality and popularity. Yuusuke is envious of Fuutarou because he is always academically the best student in his grade, leaving Yuusuke a pitiful second place. Yuusuke considers Fuutarou his rival, much to Fuutarou's unawareness.
Because of his pride, he desired to score higher than Fuutarou in a fair competition, throwing out the test answers his father gave him. He loses to Fuutarou in the mock exam, with he got seventh place and Fuutarou third. He later becomes Fuutarou friend.