Fate/Grand Order: Fujimaru Ritsuka wa Wakaranai
English name: Fate/Grand Order: Fujimaru Ritsuka Doesn't Get It
Genres: Comedy
Type: ONA, Episodes: 
Aired: Feb 4, 2023 to ?
Studio: DLE
Source: Manga
Rating: PG-13 - Teens 13 or older
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)