Kirigakure.
Mizukage Building.
Next to the Mizukage's office.
Kana's [Yin-Sealing Formation] was finally complete.
Since this was only a preliminary test of its effects, she had not drawn it over a very large area. The twisting runes, like tadpoles and earthworms, enclosed only a space roughly two meters across.
It was naturally far too small for a battlefield. A single Body Flicker Technique could take someone outside the sealing formation's range. Still, since they were only testing its sensory isolation effect, it would barely suffice.
As the test subject, Araki took the initiative and stepped into the sealing formation's area.
"Begin."
Kana formed hand seals, and every rune on the ground simultaneously lit up with a dim glow.
Standing in the very center of the formation, Araki instantly felt his extended senses strike something like a surrounding wall and get forced back.
There was no effect within the two-meter radius, but whenever he tried to probe farther outward, he repeatedly hit barriers. It was as though an invisible, immovable wall surrounded him on all sides.
A wall?
Thinking of that, he extended his senses toward the sky above him and asked, "Does this formation have a roof?"
"A roof?"
Kana asked in confusion. Only when she saw Araki pointing at the sky did she understand. "Yes. The height of this sealing formation is also two meters."
Sure enough, Araki's senses encountered an invisible ceiling not far above him.
After examining it inch by inch, he found that there truly was not a single gap above, below, or around him. Satisfied, he nodded.
The first test was complete.
Then he flicked a small Lightning Pellet from his finger.
It was the essential tool for the supporting sword technique [Stellar Restoration]—the [Lightning Stiletto].
The [Yin-Sealing Formation] only targeted sensory perception and offered