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10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as "Hunters". However, not all Hunters are powerful. My name is Sung Jin-Woo, an E-rank Hunter. I'm someone who has to risk his life in the lowliest of dungeons, the "World's Weakest".

Hyeongoh, the first place student at school, is disabled and has a knack for getting ridiculed by the school's bullies. With no help and no way out, he finds himself in a despairing situation...until someone appears to stand by his side!