Kyousuke has been arrested. Hagiwara Sakutarou, Nomura Kodou, and the others gather at the "milk hall," a small cafe serving European beverages and foods, to try to discover the truth of the situation. Each of the literary men unveil their deductions. Natsume Souseki introduces Akutagawa Ryuunosuke who also participates in the puzzle solving, but none of them come up with a deciding theory. As they ponder, a boy named Hirai Tarou steps forward. Hirai tells them that everything started two nights ago...
Each of them lit their cigarettes 
with their right hands.
كِلاهما يُشعلان السّيجارة بيدهما اليُمنى
Ambos los encienden con la mano derecha.
Ambos los encienden con la mano derecha.
Tous deux se sont servis
Entrambi
Os dois acendem com a mão direita.
Каждый из них делал это правой рукой.