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.
Episode 6 "Pot Sticker Ears – Part Two"
"الحلقة 6 "أذنا الجياوزو - الجزء الثّاني
Episode 6: Die Gyōza-Ohren, zweiter Teil
Episodio 6
Orejas de gyoza (Segunda parte)
DES OREILLES EN GYOZA, DEUXIÈME PARTIE
Orecchie a raviolo - seconda parte
Episódio 6    Orelhas de Gyoza, Parte 2
Серия 6 «Уши-цзяоцзы. Часть вторая»