MMORPG : Become Incubus at the start

One of my favorites. I loved this book and the second as well. It’s a must read!

"To the mountains?" Ri Yang looked at the sharp gray ridges shrouded in fog. They really looked dangerous... But thinking about it, didn't they have one of the most skilled members of the Brigade with them? Retired or not, Ri Yang still had trust in his teacher's ability.