Made in Abyss Movie 3: Fukaki Tamashii no Reimei

Made in Abyss Movie 3: Fukaki Tamashii no Reimei continues the epic adventure of Riko and Reg who are joined by their new friend Nanachi. Together, they descend into the Abyss' treacherous fifth layer, the Sea of Corpses, and encounter the mysterious Bondrewd, a legendary White Whistle whose shadow looms over Nanachi's troubled past. Bondrewd is ingratiatingly hospitable, but the brave adventurers know things are not always as they seem in the enigmatic Abyss... (Source: Sentai Filmworks, edited)