As Mari and Kouzuki Yuki are working at their part-time job in Akihabara to earn money for a buzzer set, Shiki and Inoue arrive in the area to train themselves with a quiz bowl game in the arcade. They're battling against a player called "Second Lieutenant Chisato" when Ashiya shows up, and the pair finds out that their opponent is someone they know quite well. Then a strange, somewhat suspicious character approaches the group...
Which of the 12 months are 
"long months" with 31 days?
ما هي "الشّهور الأطول" بعدد أيام يصل 
إلى 31 من بين الأشهر الاثني عشر؟
Welche der 12 Monate sind
„lange Monate“ mit 31 Tagen?
¿Cuáles de los 12 meses
son "meses largos" de 31 días?
¿Cuáles de los 12 meses
son "meses largos" de 31 días?
Quels sont les « mois longs »
qui comportent 31 jours ?
Quali, tra i 12 mesi, sono
i "mesi più lunghi" con 31 giorni?
Quais meses têm 31 dias?
В каких месяцах 31 день?