A Serial Killer
Luckily, all went well, and Dong-hyun managed to raise his Mana pool to a D-rank level in just an hour. It was all thanks to him having mastered the ability to sense the flow of Mana better. Thus, allowing him to accumulate Mana at a faster rate through the process.
"Oh? Yu-jin's still not done, Hyung!?" Dong-hyun asked Ji-woo.
Ji-woo crossed his arms over his chest and glanced at where Yu-jin was sitting. So far, everything was under his control. He was also relieved that the method to absorb Mana from the Magic Stones simultaneously worked.
It was like simplifying an already easy formula. But, it would be difficult if one had no sensitivity to Mana flow.
"Yu-jin will increase his Mana pool by twice yours. So, the time he needs is also longer. Also, you should stay sitting there and meditate to stabilize the new Mana.