Shirou Day

Shirou Day is an yearly event that occurs on October 19th, before the birthday of Fate character Shirou Emiya. Sei Takanashi, Rena Tateyou, and Manpig have enjoyed this festivity in the past to a monumental degree- however Rena has somewhat bitter feelings toward it in the current time.

Shirou Day will often refer to the Shirou Day in 2020 during the Dengeki Arc, where Zayd G was introduced.