Catalyst

A ferocious momentum billowed from the expansive mountain range, causing the expressions of many to change.

Before, they had dismissed the trembling mountain as just a naturally occurring earthquake. After all, for a mountain to form, fissures and tectonic plates within the earth were absolutely crucial. Though these matters were obviously not as simple as explained here, it wasn't too much of a stretch either.

However, as the tremors grew in strength, the faces of many experts turned solemn.

Even as this was happening, the seals in Ryu's Heavenly Pupils shattered one after another. The sixth… The seventh… The momentum of their breakthrough didn't stop until the ninth seal placed a bottleneck in Ryu's path.