[8][1] Kana Hanazawa, Ayana Taketatsu, Miku Itō, Ayane Sakura, and Inori Minase performed the opening theme song "Quintuplet Feelings" (五等分の気持ち, Gotōbun no Kimochi) as the group The Nakano family's quintuplets (中野家の五つ子, Nakano-ke no Itsutsugo), while Aya Uchida performed the ending theme song "Sign".

[6] Miku reveals to Ichika through the phone that she finally wants to gain independence for her feelings and tells her that they should both hold Futaro's hands during the campfire.

Meanwhile, Miku confesses her feelings for Futaro to Ichika, telling her that she is done holding back for her sister's sake and wants to win his affection.

Yotsuba and Itsuki find Futaro's camping guide, in which he wrote lots of stories to take home for Raiha.

As it turns out, all five girls had held hands with him in bed as the campfire ended all those years back, and he is marrying one of them, whose identity is still unknown.