Izumi-kun and his friends are busy getting ready for the school's cultural festival. Izumi-kun is working with the group in charge of making costumes for their class's display, and Shikimori-san is in the group working on decorations. They don't get many chances to talk, and when they each see the other having fun chatting with their groupmates... And then the festival begins at last. Izumi-kun is so busy his head is spinning, and this causes his unlucky nature to awaken yet again. On top of that, he's on duty in the library the next morning. The one on duty with him is Kamiya-san, whom he first met the previous year through the library committee. But she's acting a bit different today...
Couple Numbers is a famous 
event at our school,
،أرقام الثّنائيّات هي حدث شهير في مدرستنا
Die Pärchenzahlen werden
vom Schülerrat vergeben
Los números de las parejas es un sorteo
muy famoso del consejo estudiantil.
Los números de las parejas es un evento
muy famoso del consejo estudiantil.
« Les nombres de l’amour »
est une activité
"Couple Number" è un famoso gioco della nostra scuola
O "Casais e seus Números" é um
evento famoso na nossa escola,
«Парные номерки» —
это одно из главных событий,