Made in Abyss: Dawn of the Deep Soul

Japanese anime feature based on the manga series by Akihito Tsukushi.

In this sequel to the TV series, orphan Riko (voice of Miyu Tomita) and her android friend Reg (Mariya Ise) are joined by Nanachi (Shiori Izawa) as they descend deep into the fifth layer of the Abyss, known as the Sea of Corpses.

There they must defeat the formidable White Whistle Bondrewd (Toshiyuki Morikawa).