Sahara Mizu crouched quietly on top of him, one hand pressing against the back of his head.
Then, black markings like earthworms, like wriggling maggots, swiftly and silently seeped from his palm into Hiruko's head.
His voice was as calm as if he were chatting with an old friend in a restaurant, his expression gentle.
"Do you know?"
"For some rather special reasons, after studying Fuinjutsu for over a month, the first thing I learned was this A-rank Mutual Exploding Tag Engraving Technique."
"Although it was difficult, and I haven't studied it for long, it was enough for me to become proficient in this technique."
As he said this, Sahara Mizu lowered his face a little further. His warm breath nearly stirred Hiruko's left-side bangs, and his voice remained mild.
"You're my first test subject."
Hearing that, Hiruko felt like a criminal who had endured every kind of torture for three days and three nights, over and over again. Every hair on his back stood on end, cold sweat nearly squeezing from every pore, and only one thought remained in his mind.
If you have something to ask, then ask first!
Hiruko trembled as he struggled desperately, trying to convince this monster with his own value.
"Wait! Lord Sahara!"
"My name is Hiruko. I am the current director of Root's First Laboratory, specifically responsible for bloodline secret technique development and body modification. I know what you want to know. I'm not like those idiots. I know how to read the situation."
The sealing marks spread downward faster and faster, starting from a point at the center of the back of his head and branching outward in all directions. Like a child's ink wash painting, they extended across his cheeks according to some inexplicable pattern.
They gradually covered his entire head.