Age
17
A 17-year-old Japanese girl and highly intelligent. She has been a member of the Flowers since her early teens. Her expertise is in intelligence gathering, and she often teams up with Estella. After Hana died, Sayuri is seen entering into Hana's house. While entering, Hana's brother calls for his mother, but she is unresponsive. When departing, Sayuri in the backseat of the car seems in the car to be holding the head of Hanas brother—it can be speculated that this is what for Hana says thank you to Anthea. Sayuri shows little to no emotion, even after confirming Estella's kills.

Under the Dog
The story takes place within Neo Tokyo in the year 2025, five years after a severe terrorist attack at the 2020 Tokyo Olympics. Students possessing special abilities are forced into serving an elite anti-terrorist unit created by the United Nations, fighting against threats including other ability users. If these agents fail their mission, they will be killed along with their families, who have bombs planted within their heads. One member of this covert ops unit, a Swedish girl by the name of Anthea Kallenberg, seeks to find who she really is.