Guardian Spirit

Assured that there were no life signatures within 50 meters, Ben began to descend the cave like he did while going upstream. He continuously activated his blood vision, aligning it with normal vision to perceive his surroundings.

As he kept walking forward, the cave became more and more wide, with the flow of river water constantly subsiding. There were no more blue crystals on the wall, but somehow there was still enough light for Ben to see things without using light magic or an emergency torch. 

[ There is a constant source of light reflecting through the walls. It looks like the cave is going to open soon. ] 

"I guess so," Ben said hesitantly. It was not just the light but the wind that he could feel faintly coming from the other side, but Ben wasn't feeling excited or relieved; instead, he was feeling something else.