Though I have got my hands on a skill called Rank Booster, I couldn't use it properly because I didn't know how. Now I do.
It belongs to the monsters and I was lucky to get my hands on it.
Monsters can just sleep and level up. They don't need to do anything but sleep. Resources would help them to be better than other monsters, so they still hunted though there was no need for it.
How great would it be to improve ranks without doing anything?
This was what I felt that day when I got this skill but there was a problem then. This skill belongs to monsters, not humans. The monster bodies are built in such a way that they can use this skill without using any other means.
This was not the case for us humans. I tried to use the skill but failed miserably. So I thought that a technique was required in order to make it useful.
There were no techniques for this, at least there are none in this era.
Your gift is the motivation for my creation. Give me more motivation!
Creation is hard, cheer me up!