Desire4 books in series
Desire: A LitRPG Adventure (Volume 1) Publisher's Summary
An all powerful entity bestows individuals with a powerful brand in the form of a tattoo. Using the system that is controlled by the tattoo, you can learn supernatural abilities, acquire knowledge unknown to man, and acquire objects that would only be found in fiction. The world is changing... and it has yet to be determined if it is for better or worse.
Two friends who grew up together, Ace and Vincent, have been chosen. Ace lives for physical improvement. He loves the feeling of breaking his records and growing stronger. Unfortunately, he has plateaued in recent months, discouraging him greatly.
Vincent is plagued by little to no desire in anything he does. Good grades? Successful life? He feels nothing. Except, perhaps, the feeling of pain and fear. Sadly for him, modern day society is a peaceful one.
The arrival of the tattoo flipped their lives upside down. It granted them the ability to fulfill their desires. However... they weren't the only ones who were given the tattoo.