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.
Yes, to celebrate your being 
able to drink black coffee.
.أجل، لاحتفال بمقدرتك على شرب القهوة السادة
Ja.
Sí.
Sí.
Oui.
Sì. Per festeggiare il fatto che ora
riesci a bere il caffè.
Sim, para comemorar você
conseguir beber café preto!
Да, в честь того, 
что ты начала пить чёрный кофе.