The Imperial Green Mountain Range lay along the outer border of the Formula World.
Farther beyond was [Mobius Lake], regarded as a sea by the world of Pestilence.
Wu Yinhu had constructed a building here nicknamed the [Dark Reagent Research Institute], apparently researching chemical-like Pestilence extermination technology.
The enormous, somewhat antiquated building exuded a silent, sinister aura.
A huge sign reading [Special Chemical Research Clinic] hung at the very front, making it look no different from an ordinary medical clinic.
"It seems... this place normally isn't open to the public."
On the stone path outside, the man's voice rang out. "Is it deserted, or..."
Ruan Yin walked down the path beneath her umbrella, her expression cool and detached.
Her slender fingers trembled slightly.
A spongelike phantom flickered through her eyes.
"Wu Yinhu... is waiting for me."
Ruan Yin spoke softly.
Zhou Zhi stayed roughly half a step behind Ruan Yin. He had no intention whatsoever of making a move.
"I have only one request. Please... watch me carefully."
Ruan Yin spoke in a gentle voice.
Zhou Zhi nodded slightly.
The woman wore white, like a quietly beautiful lotus.
The metal doors ahead slowly opened.
A voice unexpectedly came from the loudspeakers above.
It carried a trace of mockery, along with barely restrained anger.
"Great Holy Lord of the Medical Department."
"I... have been waiting for you for a very long time."
The broadcast echoed throughout the entire empty area.
It even reverberated.
"At first, when I heard that you were coming to see me, I was quite happy. I just never expected that you wouldn't be coming alone this time—you even brought a... [male concubine]?"
"Oh my, I should have known. You still have physical needs. It's just that your usual aloof demeanor made us all forget."
The voice was