Fate/Grand Order: Fujimaru Ritsuka wa Wakaranai - Nenmatsu Special
English name: Fate/Grand Order: Fujimaru Ritsuka Doesn't Get It - Year-End Special
Genres: Comedy
Type: Special, Episodes: 1
Aired: Dec 31, 2022
Source: Manga
Synopsis:
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!

(Source: MAL News)