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.
R-Rika!
!ر-ريكا
R-Rika?!
¿Rika?
¿Rika?
Rika ?
Rika?!
Rika!
Рика!