The God of Trolls TGOF

In the world of Martial Arts, strength is king. If one is not strong, the blessing of freedom is taken away.
A young man named Akio Masao, an athletic person from Earth had everyone surrounding him die in a deadly war. As the war closed in, he wished to die and shut his eyes.
He is then reborn into a world of magic where everyone wishes to become the best mage.
Does Akio want to be the best mage?
The answer is NO.
Akio wishes to live a carefree life where he could be unnoticed, but his plans do not work out...