| Later, the makes a clear statement to the orphans that relics generate income for the orphanage, while instructor tells Riko that she is not ready to be assigned into the lower layers of the Abyss at her current level | Despite Riko getting cornered by the crimson splitjaw to the point of almost becoming devoured, the crimson splitjaw is suddenly chased off by a powerful energy blast |
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| Riko then flees from a swarm of neritantans, flat rodent-like creatures, finding herself in a cavern with an upward slope | Riko is then given Lyza's White Whistle and is allowed to view the sealed document, which reveals a drawing of Reg and a note from Lyza saying that she is waiting at the bottom of the Abyss |
The series was directed by and written by , with animation by and character designs by Kazuchika Kise.
5| Reg fetches a demonfish, the giant eggs of a hammerbeak, some yellow-shining grass and a shroombear infected with parasitic water shrooms | When Reg does his first delve as a Red Whistle with Nat into the first layer to search for relics on the next day, Reg believes that he will find answers to his own identity and lost memories in the Abyss by joining Riko |
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| Some time later, a balloon reaches the surface from the depths of the Abyss containing pages of discoveries made by Lyza, as well as a message for Riko stating she is waiting at the bottom of the Abyss | Habolg informs Riko and Reg that the guardian of the Seeker Camp is , a White Whistle who helped Lyza transport the infant Riko to the surface, though warning them to be wary of Ozen before saying his farewells |
However, the orb piercer predicts their movements and halts them, knocking the Blaze Reap out of their grasp.
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