Han Jee-Han, a normal high school student, suddenly develops a special power where his entire world is shifted into a game-like setting. He can see the power levels of people, look at the stats of a seemingly normal item, get abilities and even level up. Soon after, he discovers the Abyss, a world made for Ability users like him but he realizes his best friend since childhood, Shin Sun-Il, is a high-ranking Ability user that has been hiding his secret for years. Sun-Il introduces the Abyss to him and Jee-Han continues to find out new features of his ability as well as more of the hidden world.
My Opinion: A Korean web comic that is translated into English and published weekly. There is already over 100 episodes, so there is plenty to catch up on. Great visuals for a MMO world overlaid on our normal reality.