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.
I thought this was about 
celebrating Rika's recovery.
.خلتُ أنّنا سنحتفل بمناسبة شفاء ريكا
Ich dachte, wir feiern
heute Rikas Genesung.
Non dovremmo festeggiare la guarigione di Rika?
Achei que celebraríamos
a recuperação da Rika!
Я думала, мы отпразднуем выписку Рики.