Synopsis
In the fantasy world where the god gives a system to make the people's lives greater when they turned 15 years old, there is this one guy that was not given his own system.
For 3 years that guy was barely living greatly.
But everything changed when he finally learned that he had an innate ability that can absorb a monster's skill and make it to himself.
At the same time, something worst had happened to him that was caused by a demon lord, thus he swore to destroy every single monster he would see and slay the demon lord by himself.
Parental Guidance Suggested
-- Power
Ranking 
-- Power
stone 