Ozen reveals that the Curse Warding Box has the power to temporarily revive the dead and the monster Riko saw was a lump of meat she had placed in there, returning to life before dying again a few hours later. She also reveals that Riko was dead when Lyza delivered her and she was revived by the powers of the box as well, although she has no idea how much time until the effects will wear off and she will die again. Ozen then starts attacking Reg, who attempts to defeat her, but falls unconscious after attempting, and failing to use Incinerator against her. After he awakens, Ozen reveals that she was testing them to check if they can survive by themselves in the Abyss and decides to train them, just like she once did with Lyza. She also reveals that the grave she found was in fact empty, implying that Lyza may still be alive. After Reg recovers, Ozen tasks him and Riko to survive in a nearby forest for 10 days without returning as part of their training. She warns them that Reg's Incinerator must only be used as a last resort because after Reg fires it, he will collapse within minutes and remain unconscious for approximately 2 hours, leaving them defenseless. Ozen then leaves Reg and Riko to fend for themselves.