Kentaro is a male of shorter-than-average height with short, black hair which is slightly curled in places, and dark blue eyes. Like the other male students at Mizukihana High School, he wears a dark purple gakuran and dark brown loafers.
Kentaro has a natural knack for leadership and bravery, this, as well as his fairness to everyone, has lead him to become the class representative for class 2-A. He is a highly motivated individual who does his best to maintain order and take the utmost care of whatever situation he's been handed. In contrast to his collected, can-do attitude, he becomes flustered when with Miwa due to his overwhelming crush on her, and is somewhat frustrated at himself for not being able to ask her out. He and Shibui are best friends and the two are very close.