Fate/Grand Order: Fujimaru Ritsuka wa Wakaranai - Nenmatsu Special
Plot Summary: Ritsuka Fujimaru—humanity's last master. It would not have been possible to restore humanity without him. However, he does have a shortcoming... he is far too honest! A slapstick comedy in which Fujimaru's simple questions sway the heroic spirits!
Other name: Fate/Grand Order: You've Lost Ritsuka Fujimaru - Year-End Special, Fate/Grand Order: Fujimaru Ritsuka wa Wakaranai Episode 0, Fate/Grand Order: Fujimaru Ritsuka Doesn't Get It, Fate/Grand Order 藤丸立香はわからない 年末スペシャル