Though I do say those things, there are some common tropes for overpowered character cropping up in the story. So it isn't entirely without overwhelming people with power.

While I have read some reviews about how this story felt rushed, like the Kim Hajin's original story. I feel the conclusion is meant to be that way. I mean, if the ending isn't fleshed out like Kim Hajin said it was, it is clear it will always be rushed due to the short, episodic things of DP appearing out of nowhere other than a macguffin from the co-author. There isn't much to expand other than demon destroying the world, so I am not too harsh on it as a reader.

I personally, enjoyed the sidestories (not Rachel's, maybe because it is a dream and not an appealing part of the story) and it had fulfilled the wishful thinking I had where Kim Hajin had all his abilities intact.

Don't get me wrong, I believe that ending is great too. Paying the cost and left only the ability to help people is a good way to end his story. But there is always an itch and the amount of 'what if' spawns from the moment something undesirable appears.

Meaningless Conversations

Within the novel, these types of conversations are actually quite common. From the beginning to the end (though very few at the end), these just continue to pop out here and there. In the end, no matter how the female feels or whatever is slightly hinted, at some certain point, their relationship with the MC stagnates. And because of this, it creates the misconception that some of their conversations would lead to some romantic development but it doesn't, creating frustrating moments.

Harem

During the first arc (High School Arc), the MC has quite the number of relationships with females. Due to this, it creates the illusion that a harem may be formed. And yet again, as mentioned in the previous paragraph, their relationship with the MC stagnates, with the females having a certain degree of romantic affection while the MC doesn't feel any. This is extremely consistent throughout the entire story and in the end, he only ends up with 1 lover (And though I have a distaste for harem, I don't like how misleading it was).

Lack of Romance

While this novel centers are action and whatnot, there was literally no romance from the first to the third arc (High School Arc to Orden Arc). The MC only BEGINS to realize his feelings after the third arc ends (Chapter 314/378). That's right, after 300 chapters, the novel begins to talk about real romance. And as since this is more of an action novel, we still don't see much of it even when he starts to love someone. Out of the 64 chapters, only 10-14 chapters include a certain degree of romance. Truly disappointing, after the author created so many chances for it to happen before.

Orden Arc

This arc was quite subpar. Though it wasn't bad, it wasn't that too interesting either.

Demon Arc

This arc was slightly above average. It was a bit interesting and probably the best out of the second half of the novel.

Epilogue

This part was the absolute worse. Basically, the MC is given two options both : to return home at the cost of the novel's world (which is revealed to be real) or stay in the novel's world and stay as a normal resident. The MC chooses the second option and due to this, he loses all but one of his Author Privileges and is no longer remembered. He is then only remembered by a couple of his friends due to special circumstances. With his only Author Privilege remaining, he is then degraded from an important hero to a pharmacist.

Like I said, this had to be the worst part of the story. Originally, I would have rated it 4 stars but after reading the Epilogue, it dropped my rating by 0.5 - 1 stars.

just a shame that he spent years in the world only to lose all his powers. I know the side stories exist but I'm not gonna even get into it, as I just don't like them, and can't be bothered enough to talk about them

his novel was so tr*sh that even the AI could re-write for better, and he allowed the AI to do!