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...
How did he notice that
loophole in the rules so quickly?
كيف لاحظ تلك الفجوة في القواعد بسرعة؟
Wie konnte er so schnell darauf kommen?
¿Cómo averiguó eso tan rápido?
¿Cómo ha averiguado eso tan rápido?
Il a trouvé les failles
des règles aussi vite !
Come ha fatto ad accorgersi così velocemente
di quella scappatoia nelle regole?
Como ele notou essa brecha
 nas regras tão rápido?
Как он смог так быстро найти 
эту лазейку в правилах?