Shuntarou Sako is a third year student of the Tama University School of Literature. He is the President of the Street Observation Research Society. Shuntarou has been a third year in the university ever since Raika enroled. He is a lolicon and wears thick glasses. He once told Raika that "Love is justice, Love is the strongest" to justify his lolicon fetishes to which Raika later agrees.