- Creator Breakdown: At one point, Daichi Sorayomi overworked himself on the manga to the point that he passed out.
- Defictionalization: 2017 had a Keijo group pop up in Portugal.
- Dueling Shows: With Yuri!!! on Ice, another sports series that aired in the Fall 2016 Anime season, but in contrast that series plays itself straight and features a Cast Full of Pretty Boys.
- Fan Nickname: KeiJoJo!!!!!!! has come from the frequent comparisons to JoJo's Bizare Adventure.
- Relationship Voice Actor: The show is essentially an Undefeated Bahamut Chronicle reunion. To elaborate: Nozomi is Lisesharte, Sayaka is Saniya, Non is Alterize, Rin is Noct, Kotone is Yoruka and Miku is Relie.
- Screwed by the Network: When the anime was first announced, Shogakukan had Sorayomi finish the manga after it was broadcast, leaving it incomplete. Fortunately, Sorayomi made up for this matter by adding extra chapters to the 16th, 17th and 18th compilation volumes to complete his story.
- The Wiki Rule: Keijo!!!!!!!! Wiki.
Trivia / Keijo!!!!!!!!