Something is off with Hiro's sense of time. He's constantly late, and almost misses his curfew. Ruli suggests a trip to the library for a change of pace. They meet some unexpected visitors and learn the cause of Hiro's problems.
What? So you were up all night?
ماذا؟ سهرتَ طوال اللّيل إذاً؟
Hä? Du warst die ganze Nacht wach?
¿Qué? ¿Pasaste la noche sin dormir?
¿Qué? ¿Has pasado la noche sin dormir?
Et t’as décidé de faire nuit blanche ?
E così sei rimasto sveglio tutta la notte?
Hã? Então você ficou 
acordado a noite toda?
Что? И ты всю ночь не спал?