Sayuri is a girl with a pale complexion and below average height. She has dark blue hair tied with two braids, light blue eyes and wears round aquamarine green frame glasses. She was seen wearing only the standard female school uniform. She's 154 cm tall.
She was shown as a quiet, shy and somewhat mature girl, who was seen enjoying reading more than chatting or in the company of other people; taste that she shares with Yukito Tsujii, so it could be said that he was close to her.