It's slop, but it's good slop, IMO. Basically the premise of the show is one of your lightly-DnD based fantasy worlds where there's Skills and dungeons and such. The protagonist, Noor, wants to be an adventurer more than anything, so that he can travel and experience life and be useful to people. But after going through the implied-to-be-rigorous three month courses for every possible skill (which seems to be paid for by the state, btw! just sayin', big ups) he never manages to acquire a skill other than the most basic possible for every branch. To be licensed as an adventurer, you need "at least two useful skills." So he's denied, travels back home, and does the anime thing of training each and every one of those skills intensely for the next fifteen years.

So, although he can't use an attack skill, he ends up able to parry over ten thousand swords simultaneously with a single breath. His "tiny flame," a magic barely even useful to conjure a candlelight, can summon a basketball sized orb of fire.

Despite his prodigious ability with these skills, he ends up registered as a mere F rank adventurer, as a symbol of charity, basically. Calling him an adventurer while he's mostly a shit-shoveler (the subs call it mud, but, I mean...)

Even after the Plot Happens, it turns out our MC is a 100% himbo that is entirely locked into his mentality of not being worthy. He defeats a minotaur, in this world a demon from the Abyss, but thinks it was "just a cow." He fights a Goblin Emperor, implied to be a magical bioweapon that could destroy a nation, thinking it's just your basic goblin. "A single goblin causes me this much trouble, I'm really not ready" he thinks. Numerous members of the royal family are in awe of his abilities, but he basically seems to not know what "royal family" means, lol.

His opinion of his abilities are so low that when offered basically any reward he can think of, he says he's good, he doesn't need anything because he didn't really do much, making the king basically think he's a selfless saint

Anyway, I have a low bar for entertainment, it really is some slop, but it's been real fun.

Also although I'm only 5 episodes in if you're worried about it being grossly oversexualized or whatever it's got none of that nonsense, just a man learning to parry harder than anyone's ever parried before