Review Detail of L3zl13 in Keys to the Gate

At first it seemed to be an interesting story but unfortunately the execution is very poor. Unexplained, impossible lucky coincidences. The MC turning to a tycoon suddenly that even the world most powerful organisations are jealous of him after a single quest. MC suddenly showing expertise in things he should not be knowledgeable about just so he could show off. MC's personality changing suddenly within a few chapters.