'If I can improve the puppet string, I'll be able to control this spirit from a larger distance away.’

Yeon-woo decided to give it more thought later. Aside from the string, the spirit’s physical abilities were better than he’d expected.

Whack! The Spirit Familiar struck a tree with only a few blows before the tree toppled. Yeon-woo noticed the spirit sneaking a glance at him. Even though it didn’t have any expression on its face, Yeon-woo could tell that it was waiting for approval, just like a dog. When Yeon-woo gave him a few nods of acknowledgment, the dark misty spirit seemed to vibrate in gratification.

Yeon-woo couldn’t help smiling. Then, he mused, ‘The conversion only upgraded the spirit’s original ability by a small extent. But it is still able to inflict physical damage, so if I get enough Spirit Familiars, they’ll be useful.’ Yeon-woo remembered the group of Evil Spirits that had attacked Bild together. Individually, the spirits had been weak and insignificant, but as a group, they made even Yeon-woo flinch. 'I have learned a lot about controlling spirits from this experiment, but I’ve still got a long way to go. I can’t assume I know everything from the information I’ve gotten from testing one specimen. Besides, I still don’t know what will happen once I control multiple spirits at the same time. I don’t even know if there’s a limit to how many spirits I can have.'

However, Yeon-woo couldn’t help having big expectations...