For those who have yet to start, here's my honest thoughts :
This became messy quickly. Too quickly. The author got confused with his own work, and just try to please us by making the mc more and more op.
The problem is that this became something like "Oh, the mc is op. Oh, this enemy is even more op. The mc became more op than the enemy. A new enemy even more op. The mc blablabla". It's a spiral without sense. What's more, the story, which wasn't supposed to be deep or anything, is getting just ridiculous with an author trying to deepen it needlessly.
Well, if u want to see power jump everywhere with a messy story and bad drawings, I guess this is godsent for you