Sayo is the protagonist of the story "A love song in a nameless country" from "Yuri Hime Collection". A kind but spoiled princess who was forced to marry from another country.
- She has been kind to Ayame since childhood, giving her advice with her bossy manner to get stronger then hugging her and giving her a kiss on her forehead.
- Her wish was to be with Ayame forever so Ayame can get stronger and protect her someday.
- She ordered Sayo to sleep next to her at bed.