The laboratory is enormous, with various research instruments covered in dust, and the array for dust removal has long stopped functioning.
Through the duplication's perspective, he saw the crystal container, three meters tall, in the center of the laboratory, with runes all over its surface.
Inside the container was Black Water, black as ink, emitting scorching heat and bubbling vigorously, with intricate black tubes crisscrossing.
"It looks a bit like an instrument for bloodline modification experiments."
Eventually, the duplication found some things resembling laboratory research logs.
After reading them, Levi pondered.
The owner of this relic, name unknown, was researching an Eight-Ring Life Extension Potion called [Thousand-Year Potion]. If successfully researched, it could extend one's lifespan by a thousand years after consumption.
This potion required the Undying Bird Bloodline, so he imprisoned a Level 8 Undying Bird, researching day and night.
