Rio learns that his mother's ears have turned into pot stickers because his older brother Yuu was kidnapped, and Rio feels responsible for what happened. When Rio nearly falls off a cliff while searching for Yuu, Ramune throws himself in harm's way to protect him and ends up badly injured. In order to save Ramune, Rio uses the Pearl of Night Voices he received from Ramune to treat his mother, desperately calling out to his mother, who can't hear his voice.
Only his mother can hear Rio-kun's voice.
.فقط أمّه تستطيع سماع صوت ريو-كن
Der einzige Mensch,
der Rios Stimme hören kann,
Solo su madre puede escuchar a Rio.
Vous êtes la seule personne
à pouvoir entendre sa voix.
Solo sua madre può sentire la voce di Rio.
Então apenas você,
que é a mãe, poderá ouvir.
Только мама Рио способна
услышать его голос.