Age: 22
Height: 163 cm (5' 4")
School: Nekomi Institute of Technology (NIT)
Major: Electronics
Seiyuu: Asami Junko
Sayoko appears in the second volume of the OAV. She was the "Queen of NIT" and most popular girl at the college until Belldandy appeared. She has a high GPA and is in Art Club. She is determined to reclaim her place as the dominant female of NIT by stealing Keiichi away from Belldandy or by finding out Belldandy's secret. However, she wants to defeat Belldandy fairly.