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.
were all complicit, 
either directly or indirectly.
،كلّهم مذنبون
.بشكلٍ مباشر أو غير مباشر
alle direkt oder indirekt
Mittäter waren.
Estos cinco estuvieron involucrados
directa o indirectamente.
Estos cinco estuvieron involucrados
directa o indirectamente.
ces cinq personnes sont coupables,
directement ou indirectement.
voi cinque siete direttamente
 o indirettamente coinvolti nel caso.
foram todos cúmplices,
direta ou indiretamente.
прямо или косвенно 
были причастны к произошедшему.