A weak and sickly boy, Sung Woo-mun's condition worsens when he loses his mental capacities, owing to a painting gifted by a sage. He grows up as the 'village idiot', pitied by his own parents. But unbeknownst to everyone, his life is about to change soon, and a new destiny awaits him. When Sung Woo-mun turns 20, not only does he have an epiphany, but an undefeatable martial arts power begins to bloom inside the painting. What could all of this mean for Woo Mun? And what strange world awaits him?
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Links:
<ul>
<li><a href="https://webtoon.kakao.com/content/%EB%B6%88%ED%8C%A8%EA%B2%80%EC%84%A0/1985">Alternative Raw (Kakao Webtoon)</a></li>
<li><a href="https://piccoma.com/web/product/47151">Official Japanese Translation (Piccoma)</a></li>
</ul>

Read the comic The Undefeatable Swordsman online, along with others like The Beginning After the End, Solo Leveling, Omniscient Reader's Viewpoint, Jujutsu Kaisen, The Greatest Estate Developer, Revenge of the Baskerville Bloodhound, The Swordmaster's Son, After Ten Millennia in Hell, I’m the Max-Level Newbie, My Blasted Reincarnated Life

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