Strongest Newbie

When you play the world's hardest game, die thousands of times but still continue. What will you call that person? Crazy? Hardcore Player? Or, just a time-waster? But, Ji-Yoo spent his 12 years in the Virtual Game "Hell Tower" which doesn't only have hard difficulty but insanely hard. In one word, impossible. But the sole clearer of that game, he stopped playing. But just after one day, he stopped gaming, the reality turned into a game. Hell Tower came into reality and now, Ji-Yoo with the knowledge of the whole game, will be overwhelming that no one could comprehend.