In order to find Hayate, Nagi’s brain goes into super computer mode and starts spinning and spinning. And after all this thinking, what plan does she come up with? A broken bond, a loveable butler, a promise from the past, a promise for a better tomorrow, and a mistaken delusion about money…everyone’s wishes combine into one as Ruka’s Las Vegas concert begins!
But wouldn't a safe be preferable?
pero ¿no sería mejor 
guardarlo en una caja fuerte?
¿no sería mejor que lo guardaras en una caja fuerte?
Não era melhor colocar dentro do cofre?