Fukuzawa gives Rampo a pair of glasses, claiming that wearing them would activate his ability to instantly determine the truth of any situation, and taking them off would give him the ability to tolerate the stupidity of the ordinary person.
The other is that they've witnessed 
a person's death up close.
.والشّيء الثّاني هو أنّهم شهدوا على موت أحدهم عن قرب
Zum anderen wurde ihnen
der Tod eines Menschen präsentiert.
La otra es que presenciaron una muerte.
La otra es
que han presenciado una muerte.
Deux, ils viennent de voir un crime atroce
se produire sous leurs yeux.
La seconda è che hanno assistito
da vicino alla morte di una persona.
A outra é que eles testemunharam
a morte de uma pessoa de perto.
А во-вторых, у всех этих людей
 на глазах убили человека.