Chapter 421: Penta-gene Phaser

He could feel his mental energy that had barely increased during the past few days suddenly start to increase.

At first, the increase in his metal energy when using the supersensory technique, was as like a drop of water landing on a bowl at a very slow rate.

But as he used the Revolving Flow Breathing technique, the rate at which his mental energy increased was astounding.

Furthermore, although it still felt like a drop of water in a bucket, that drop of water was being released at a steady pace now and after a while, when the droplets reach the maximum limit, he could finally breakthrough to become a Late Mortal stage expert.

But David knew he was still far from being at the late stage, so he wasn't at all worried.

This wasn't what surprised David the most. What made him incredibly happy was the fact that although he was mentally drained, his body seem to have gotten used to the tiredness.