Fate/Grand Order: Fujimaru Ritsuka wa Wakaranai
English title: Fate/Grand Order: You've Lost Ritsuka Fujimaru
Japanese title: Fate/Grand Order 藤丸立香はわからない
Type: ONA
Episodes: 33
Source: Manga
Genres: Comedy
Studios: DLE
Producers: Notes, INSPION Edge
Duration: 2 min per ep
Rating: PG-13 - Teens 13 or older

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)