He is tall and of average build, with red hair. He has a snaggletooth in the left side of his mouth which shows when he smiles widely. He also has a number of piercings: three helix piercings and one lobe piercing in the left ear and two lobe piercings in the right ear. Appearance-wise, he gives off the impression of a bad boy to other students. Sasaki is presented as a bright and cheerful upperclassman, albeit overly anxious; however, this is not necessarily the full picture. 