章 775: 405 Measure (4100)_2

The wails echoed endlessly, as though men, women, elderly and children were all crying out in unison. It created a terrifying and spine-chilling feeling of dread.

The Ghost Iron Knight felt a shiver in his heart, yet Casio boldly went ahead. Seeing Casio's decisive demeanor, both men inexplicably gained confidence.

They hastened to follow him, entering the depths of Wailing Valley.

At first, it looked like any ordinary valley; the ground was littered with bizarre rocks, pebbles, and overgrown weeds. On the sides were the cliffs of ashen mountains, unusually steep, with indiscernible moss occasionally attached. As they went deeper, the cliffs around them gradually began to show bizarre changes. There were black lines on the stone surface, appearing and disappearing like patterns, wriggling like parasites underneath.

The color of the stone surface also took on a semi-translucent quality, akin to jade. Casio glanced over it and quickened his pace.