Takamatsu is an honor student who has a polite personality and wears glasses. He mainly contributes to the SSS through intelligence gathering and other affairs but does not actively fight. He has dark blue hair and dark bluish-purple eyes. He also wears glasses. He wears the standard SSS uniform. Though appearing to be slender, in episode 5 of the anime, when having to act as a diversion, he reveals himself to be actually well built muscle wise and appears slimmer with his clothes on. He is even more muscular than Noda. Yuri herself says to not be fooled by his glasses and that he is actually an idiot.Though appearing to be slender, he works out and is actually well-built muscle-wise. After he first reveals this, he tends to take his shirt off, much to everyone's discomfort.