As they were visiting the Black Market, Asta and the others see an old woman get robbed, and Asta goes after the thief.
How did you know?
كيف عرفت؟
¿Cómo lo sabes?
¿Cómo lo sabes?
Comment le sais-tu ?
Come fai a saperlo?
Como você sabe?
Откуда узнали?