The Demon Shelter

Whenever Yi Dongmu had free time, he would go to practice with Han Sen because he wanted to master that skill.

Han Sen accepted the money he offered, as not to feel bad by rejecting Yi Dongmu's request. He practiced with him every time he could. The power of the skill surprised him. Even though Han Sen's battle perception far exceeded Yi Dongmu's, it was coming to the point where even he would not be able to dodge the slashing skill.

"It's a shame. You cannot find a skill like this in the Saint Hall, and I wouldn't mind learning it for myself. I'd wager it would feel great to kill things with this skill," Han Sen said to himself.

Accompanying Yi Dongmu in his practice yielded a few benefits of his own, too. He had to apply his focus to sense when Yi Dongmu was going to attack, and this worked to improve his perception even more.