Chapter 421: Chapter 421 The Collapse of Mythology_1

At this moment, their battle was at its most intense, teetering on the brink of either victory or death.

Chu Yuan's face was expressionless as he interlaced his hands to seal the ruling principles.

Countless shimmering runes of sealing chains spanned the sky like colossal dragons, one after another, controlling the entire field and sealing the Demon Abyss Ruler, letting him fall into an eternal sealed realm.

"With the Great Sealing Technique, seal the mana!"

Chu Yuan delivered a thunderous blow, and countless chains carrying sealing runes swept across.

"Great Sealing Technique!"

The face of the Demon Abyss Ruler drastically changed; those sealing chains swept towards him and brought his mana into a state so difficult to mobilize that he suddenly began to burst forth an even stronger power from within his body, producing a pitch-black Demon Sword in his hand.

The Demon Sword tore through the thick chains, but in an instant, even more condensed and emerged.