The Nakano Quintuplets have their own unique hand gesture (they make a pinky promise with all five of their hands interlocked together), create their own "Quintuplets Finger Game" (guessing which finger a sister shows) and "Quintuplets Puzzle Game" (a game with the sisters' facial features as the puzzle pieces), often do "Quintuplets Jokes" (where they dress and disguise as each other), and tease Fuutarou with a "Quintuplets Guessing Game" (where everyone dresses as one sister and makes someone guess their identity).
Quintuplets Joke(s) happens when a Nakano sister impersonate/dress/disguise as another sister. The sisters often do this for various reasons: to avoid or gain someone's attention, saying/doing things they usually can't/don't do, or even finding their own sister.
Each of the quintuplets generally have their sisters' wigs and accessories prepared with themselves so that they can pull out the trick at their disposal. The impersonation's purpose also differ the level of disguise: It can be done as lightly as only putting on accessories without any extra effort, or as serious as completely changing into other sister, inside and outside.
List of Quintuplets Joke
|Chapter||Sister||Disguising as||Level and Method||Purpose|
|4||Miku||Yotsuba||Partial (Accessory)||Evading Fuutarou's chase.|
|16||Nino||Itsuki||Partial (Mannerism)||Tricking Fuutarou into revealing information.|
|18||Itsuki||Miku||Partial (Haristyle)||Testing Fuutarou whether if he can distinguish the quintuplets.|
|22||Miku||Ichika||Partial-Full (Wig/Accessories)||Rejecting Maeda.|
|29||Itsuki||Partial (Mannerism)||Learning more about Fuutarou.|
|40||Miku||Nino||Partial (Accessories)||Tricking the hotel receptionist into opening Nino's room.|
|45||Partial (Accessories)||Gaining access to Nino's room.|
|46||Itsuki||Yotsuba||Partial (Accessories)||Have Yotsuba quitting the track team; unsuccessful.|
|47||Nino||Partial (Accessories)||Have Yotsuba quitting the track team.|
|Scrambled Eggs Arc||Nakano Quintuplets||Itsuki||Full||Assuring their grandfather of their unity.|
|74||Ichika||Miku||Partial-Full (Wig/Accessories)||Avoiding her classmates.|
|80||Partial-Full (Wig/Accessories)||Preventing Miku's attempt to confess to Fuutarou.|
|82||Nino||Partial-Full||Gaining access to Miku's room.|
|82 - 83||Ichika||Partial-Full (Wig/Accessories)||Preventing Miku's attempt to confess to Fuutarou.|
Quintuplets Pinky PromiseQuintuplets Pinky Promise is usually done when all five of Nakano sisters are set to accomplish one goal/promise. They make a pinky promise using their hands like usual, but with all five of their pinky fingers interlocked together.
- First Appearance: Chapter 19
- List of Quintuplets Pinky Promise:
Quintuplets Finger Game
Quintuplets Finger Game is a game where someone guess which one out of the five finger the other person shows.
- First Appearance: Chapter 24
- List of Quintuplets Finger Game:
Quintuplets Puzzle Game
A game with the sisters' facial features as the puzzle pieces.
- First Appearance: Chapter 51
- List of Quintuplets Puzzle Game:
Quintuplets Guessing Game
Quintuplets Guessing Game is a game where several sisters dress as one particular sister and make someone guess their identities.
- First Appearance: Chapter 64
- List of Quintuplets Guessing Game: