If Renji's holding of the "Crimson Star" had only shattered Dr. Roca's worldview before,
Now,
When Renji let ought the [Small Miasma Crystals]—and not one, but three—this mad scientist in the gray coat had clearly lost his sanity, utterly unhinged.
Perhaps this is what scientists are like.
After all, if we're drawing comparisons, science itself could be considered a form of Miasma.
On the other hand,
Although Dr. Roca had gone mad,
Ajax, at least, learned from him that what Renji was holding was crystallized Miasma!
As a contrast, Ajax pulled out a "precious" reagent he had been carefully hiding in his chest. It was the most successful and highest-concentration [Miasma Reagent] that they in Callewa had developed over several decades.
Ajax had always treasured this Miasma Reagent, even to the point of admiring the beautiful russet liquid inside it each day, gently wiping down the bottle's surface.