Very boring. The story revolves around a loser who doesn't want to do anything or interact with anyone, and we're supposed to believe this person actually worked the hardest or something.
The MC is extremely unlikable and so is every character that is being introduced throughout the story.
This doesn't work as a power fantasy, it doesn't work as a harem, it doesn't work an an action manga.
This could work as a parody, unfortunately though it takes itself 100% seriously. And any humour falls extremely flat. A case of "You have become the very thing you swore to destroy!"