The mother of Masaru and Chika Daimon.
When Agumon was first brought home to the Daimon household, Sayuri was rather casual when regarding the waist tall dinosaur joining the family. It seems like her mind is somewhat spacey for ot noticing this, but it then is revealed she already had known about digimon previously. She is very supportive of Masaru, but displays concern when he announced he was going to return to the Digital World to destroy the Gizumon XT. Her memories of Agumon were temporarily erased, but was later reversed, allowing her to regain them. She also invites the former DATS team over to dinner, and is somewhat amazed by BanchouLeomon's appearance upon meeting him for the first time.