Ch. 167 'Ancient Artefact'
The thing needed to trigger mermaids' most profound memories before they became evil spirits was the blood of the pure mermaids who had a strong desire to save this lake.
If Zehell were a pure descendant, he would not hesitate to give his blood because he has a great desire to restore this lake's state to its glory.
Unfortunately, Zehell is not a pure breed, but a half-breed. He didn't meet his requirements, and they couldn't possibly use his blood.
Then where can they find mermaid blood while almost all of the mermaids in this place have become evil spirits?
Niken's eyes, which had been filled with hope, now dimmed without light. She felt she was in a hot wilderness and had been walking for days without finding water or an oasis. But she got excited again when she saw a small lake and coconut trees not far from her place.