The ancient forbidden art, the Grand Void Sealing Technique. It was an art performed by sacrificing the lives of a thousand beings with yin energy and a thousand beings with yang energy, using their power as a foundation for thousands of incredibly intricate deadly formations.
Not only was the preparation process for this art exceedingly difficult, but it was also a technique that used the caster's life as collateral, which was why it had long since disappeared. The Seer had once used this art to easily seal one of the Six Demons, the Sea-Slaying King, Heavenly Hound.
It required many sacrifices, but the terror of this art was that once something was trapped, it could never escape without a complex magic art formula of release. This would be true even for an avatar. After all, this art was created specifically to confine otherworldly beings.
However, something completely unexpected happened. -Throb! The moment he met the sharp light in Mok Gyeong-un's eyes, the Seer's clone felt a pain as if his heart were being stabbed by a sword. The eyes of the Seer's clone trembled wildly.
Trapped in the Grand Void Sealing Technique, the man should have been completely unable to move. Yet, for him to inflict a wound like a sword stab to his heart in that state, there was only one possibility.
‘…Impossible. The heart’s sword?’