On Valentine's Day, popular mystery author Aigasa Kurisu invites Kiyotaka and Aoi to the Shinkokan at the Yoshida-Sanso. But instead of an innocent book reading, they find a group of suspects and a mystery to be solved.
so I thought his marriage
 might be the cause.
.لذا فكّرتُ أنّ زواجه قد يكون السّبب
Imaginé que sería su matrimonio.
Imaginé que sería su matrimonio.
per questo ho pensato si trattasse del matrimonio.
então achei que o casamento
poderia ser a causa.
и я подумал, это из-за женитьбы.