Kirishima has an outgoing, friendly and determined attitude, ready to take on any challenge that comes his way. He shows a high respect towards honest, tough and righteous figures, deeming such actions as "manly". At the same time, he dislikes opposite attitudes such as cowardice or cheating. Originally, Kirishima lacked confidence or self-esteem, and was ashamed when he could not help two girls who were being threatened by a gigantic villain.