*Supremacy*'s Manga

This had so much potential. I really liked the first half of the story but in the second half the story went astray for various reasons. At first I liked the fact that Jinsung wanted to improve both physically and mentally to control his edeya, and that he was proving everyone that he wasn't just a mere F rank, but in the second half he gained a bunch of skills out of nowhere and I personally didn't understand where they came from. Why does he never loose?? He won EVERY SINGLE BATTLE that he fought even when the enemy was so much stronger than him. And after every battle he got badly injured and hospitalized to then go on and have another battle after 2 days of recovery, like, how is that possible??I preferred when there was only Peste as a world enemy, because I sincerely don't understand where the fck came out that Satan Lord or whatever he is, he is TOO OP, he summoned beasts that killed millions of people and that killed even THE WHITE JADE FAMILY that was literally the main force of south Korea and then he summoned a bunch of op towers that no one could complete IN THE WHOLE WORLD. And then Satan decided to send everyone to hell...like, hello??What is his problem. For me after this it was complete chaos, Jinsung after 5 FCKING YEARS returned to an apocalyptic world, I don't understand for what is he fighting anymore? Everything is broken and destroyed, and yokais or whatever that play with humans, how have we come to this?? Another reason is that prophecy kid that came out of nowhere, like, why??? Even the change of the art style wasn't the best, because before the eyes of Jinsung, even when he wore glasses, had a bit of a sly-evil being, but now his eyes when he activates his edeya are just red. Even the fact that the meeting with his uncle and his aunt wasn't that significant, like hello???They are the source of his trauma and edeya, what about facing his trauma directly???It was literally ignored and the meeting lasted 2 seconds. Maybe it's me that doesn't understand, but this story could have developed better.