With the release of his fourth tail, Naruto completely loses his awareness and is overtaken by destructive impulses.
Which means that he gave out
the information of his own volition.
.ما يعني أنّه أفشى المعلومة بمحض إرادته
Lo que significa que él les dio la 
información por su propia voluntad.
Lo que significa que os dio la información por voluntad propia.
Ciò significa che vi ha dato
la soffiata di sua spontanea volontà.
Получается, он рассказал
всё по своей воле.