After all, the highest grade monsters here were limited by the roof of power in this world. And that wouldn't help him break through the limits of this world at all.
He knew his devouring ability would take him all the way through the top ranks of this world. But if he wanted to go beyond, he had to find a training manual that would help him take such step.
'I can delay the matter of selecting my training manual for the time when I hit the gold rank at least,' he decided before shifting his attention towards the next type of techniques.
The next type was the one he sought after; the ones related to elements. Although such techniques were quite overbearing, they still placed much pressure over his spirit power.
And after many hours of considering everything, he decided to go all out and modify a few techniques he knew to better suit his current situation.