SSS Rank Level Life Difficulty

Kenji received an email from the sender named God to test the game, but after customizing his character Kenji died due to a heart attack. He was born in a world where level up and class are everything, Kenji receives the weakest sword class all-rounder the one who received this blessing cry in despair because no one ever succeeded in leveling up the all-rounder , even if you can learn all the techniques but it was very hard to master it. Kenji use his modern day knowledge to advance and become the strongest. LETS JOIN THE STORY OF KENJI SUFFERING INTO SUCCES