Fuutarou and the Nakano Quintuplets go on a camping trip, about which there is a notorious legend involving the bonfire dance. Fuutarou, who is chosen to be part of the committee for the Test of Courage, doesn't take the legend seriously; on the other hand, the Nakano sisters believe the legend and some of them have a fight about who gets to be Fuutarou's dance partner.
The volume cover features Miku Nakano in her student uniform, with light-blue colored flower petals scattered in the background.
- Loves western music, but has zero ability to pick up spoken English.
- Favorite animal: hippopotamus
- Her beloved long hair is constantly getting caught in train doors.
- Favorite animal: rabbit
- Currently keeping a Sengoku Period game she borrowed from Yotsuba for her own.
- Favorite animal: hedgehog
- Her one worry is that her name takes more strokes to write than her sisters'.
- Favorite animal: camel
- Will eat stew with white rice.
- Favorite animal: kangaroo
- Lets his little sister cut his hair with normal scissors every time.
- Favorite animal: gorilla
- Favorite animal: penguin
- Chapter 24: The Binding Legend: First Day
- Chapter 25: The Binding Legend: Day 2 ①
- Chapter 26: The Binding Legend: Day 2 ②
- Chapter 27: The Binding Legend: Day 2 ③
- Chapter 28: The Binding Legend: Day 2 ④
- Chapter 29: The Binding Legend: Day 3 ①
- Chapter 30: The Binding Legend: Day 3 ②
- Chapter 31: The Binding Legend: Day 3 ③
- Chapter 32: The Binding Legend: Day 2000
- Two of Ichika's male friend are fantasizing about her, and they don't mind a sleazy Ichika.
- Maeda is seen paired together with a girl (later become his future wife) for the Test of Courage. He is angry at Fuutarou for being missing.
- Two of Nino's friend comment that boys are idiots, only to make a blushing remark about a particular guy soon after.
- The History Teacher and Student Guidance Teacher shake hands together during the bonfire event.
- In the first chapter of Volume 4, there is a game about Nakano Quintuplets' finger game which involves all five fingers. In the last chapter of Volume 4, Chapter 32, each of the Nakano Quintuplets holds one of Fuutarou's finger.
- The flower petals' color in the volume cover background represent the sisters' color scheme: Light blue for Miku and Miku's headphones & sweater