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...
That tight grin of his when he's grappling
with some difficult problem...
...ابتسامته المتشنّجة تلك عندما يعاني بسبب مشكلة صعبة ما
Sein verkrampftes Lächeln,
wenn er vor ein Problem gestellt wird …
Y su sonrisa tensa
cuando se topa con un problema.
Y su sonrisa tensa
cuando se topa con un problema.
Son rire forcé
quand il rencontre un problème épineux.
quel suo sorriso nervoso
 di quando si ritrova nei guai,
E seu sorriso tenso quando se depara
com um problema difícil.
Вымученную улыбку,
когда ему по-настоящему сложно.