The Weakest Hero with the Strongest Skill!

✔️ An incompetent hero?✔️ Amazing protagonist progression? From weak → Still weak!?❓ Your typical fantasy world?✔️ Golems? Fairies? Orcs? Angels?✔️ Haikus?❌ OP Slime monsters?✔️ Cute Slime monsters?✔️ Comedic slowburn?🙅‍♂️ Not a LitRPG.

Inevitable『The Unique Hero Skill!』

Ability Description『No strongest foe of the world is to face me and live to tell the tale!』

Ability Effect『Semi-sentient ability that overpowers its target until nothingness remains of it, bringing oblivion upon the strongest creature known in existence.』

Drawback『It only has effect on 'The strongest being', rendering the ability useless 14,598,073,437 times out of 14,598,073,438 (current world population).』