Overpowered MC, Rankings, Dungeons, Awakenings, etc.

This is relatively new and the premise is pretty good. Another "weakest player" getting an OP ability. His ability is one that let's him fuse with "egos", these entities that grant him abilities and can manifest as a weapon in his hands. This is his special ability, but for the past 5 years it's been a mystery and he hadn't awakened it yet and he had been unable to pass his level 1 ranking, but after being faced with a freak attack in the tutorial stages where he works as a guide, he awakens it.

OF COURSE THIS IS THE #1 ON THIS LIST

This is the original novel that most of the concepts of the other books on this list are based off of. The MC is likable and extremely OP, but I feel like the only flaw is he isn't really written with a defined personality aside from wanting to get stronger and protect his family. Still the best one on this list in terms of action, plot, art, and pacing. A MUST READ!