The Freak Reclamation Master

This novel is almost identical to the original; it's not even a fanfiction.

And the main character seems so weak, he's really just a minor character (`Δ´)!

Most of it is just a written version of the original work; reading it is almost the same as reading the original text once.

In remembrance of your former divine appearance, a tribute to your hair.

Too much unnecessary dialogue, the protagonist is too weak, the plot is really weak, it's hard to keep your attention after a few chapters, and it's so verbose and padded that it's annoying. There's too much narration and plot, and too little of the protagonist's growth process; he's basically a lazy bum throughout.

Saitama who isn't invincible isn't Saitama. Invincibility is a setting, unless the author of One-Punch Man changes that setting.

It feels almost identical to the anime storyline.

I actually prefer a completely new protagonist within the One-Punch Man universe, but this one essentially "translates" the original work into a novel, adding a character that doesn't affect the plot.

Copying the original doesn't qualify as fanfiction. I suggest you revise it. I've seen several fanfics that were very similar to the original, but they were later banned. If you continue like this, it'll be your turn soon.

The entire book is about cannibalism. 🤫