Paseri s an actress who played Sanae kochiya in a Touhou video produced by Colonel Alice ( TIS Aneki ), commonly known as Cookie☆☆ S1 (Old Christmas).
She was unknowingly forced to eat poisoned "marimo-like ohagi" left by Benikurage who is played as Reimu. Who she thought it was a gift from santa, after taking a bite she collapses soon after.
In the MMD version of the play, Benikurage who plays Reimu drew cross on both cheeks on Paseri as a prank.
She is portrayed by the fans of cookie fandom as a nursery teacher, she can be seen wearing an apron on her shrine maiden costume.