Hidden inside the Tamatebako was a sealed glass container holding a peculiar silver liquid.
After NESTS conducted some research, Ignis sent most of the liquid to the Kronos Kingdom.
The little that remained was enough for NESTS.
The liquid had a special property: it contained immense vitality.
Simply carrying it allowed the vitality it faintly radiated to nourish the body, greatly extending one's lifespan.
Healing injuries and curing illnesses were no trouble at all.
It was precisely because of these astonishing effects that Ignis had sent the liquid back to the Kronos Kingdom immediately.
Though he had founded NESTS, that did not change the fact that he and the Kronos Kingdom were one, especially when it came to a treasure capable of extending life.
Drawing on some legends from Fish-Man Island, Ignis had also given it a lovely name: "Mermaid's Tears."
Its effects were astonishing. To a certain extent, it could even restore youth.
All one needed to do was carry it.
But once someone drank the Mermaid's Tears, it would turn from a life-extending treasure into a poison that burned away their lifespan.
It would burn through the body's vitality at a frantic rate, granting tremendous power for a short time.
Once that time was up, the lifespan consumed would be gone, never to be recovered.
Ignis planned to study it and replicate the effects of drinking it, creating a berserk potion that could briefly enhance combat strength.
Of course, it would have side effects. More precisely, it would be a weaker version of drinking the Mermaid's Tears.
This would be the flagship product that secured NESTS a foothold in the Underworld.
Many people were willing to pay a price for a brief surge of power, even if that price was their life.
This sea was, by its very