The moment the culture festival reached its finale, the jewel object made by Shirogane was stolen by a phantom thief who calls himself Arsène. Kaguya and the others headed to the roof where the phantom thief keeps appearing, but there was no one there. Fujiwara, who transformed into a genius detective, struggles to solve the mystery behind the calling card and uncover the thief's true identity. But Kaguya, left behind at the scene of the crime, had begun to figure out the criminal. The problem is the location. Kaguya traced the phantom thief's line of thinking and headed to where he is now...
So many of these little accidents are cropping up!
Nothing's going according to plan!
!بدأ الكثير من هذه الحوادث الصغيرة تظهر! لا شيء يسير وفق الخطة
Ausgerechnet jetzt dieser Zwischenfall
und überhaupt nichts läuft nach Plan!
Con tantos accidentes
no puedo llevar a cabo mi plan.
Con tantos accidentes
no puedo llevar a cabo mi plan.
Cet incident tombe au pire moment.
Rien ne se passe comme prévu !
Per colpa di tutti questi episodi,
 non è andato nulla come speravo!
Com tantos acidentes,
não consigo cumprir meu plano.
Одно происшествие в самый неподходящий
момент — и план трещит по швам!