I can't interpret it exactly,
but I have an idea on what Voraro wants to say.
The role of Voraro was originally a lookout
to manage the trees of the forest.
But as Kamasylvia Forest became unstable,
Some of the Voraros lost their roles and wills.
They are wandering around the forest and damaging the nature.
Voraro here is also feeling sorry and regret for this.
Voraro saying, Rasa... Raherara...
means, "Give peace to them."

Rasa... raharara... It means, "Give peace to them."

Rasa... rahara... rahara.

(I'm guessing it means, "Thank you...")

Completion Target: Voraro
- Defeat corrupted Voraro at Mirumok Ruins

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Required actions:

1. Kill monsters (3):
   - Voraro