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A weak cowardly boy who is constantly being bullied, one day he encounters his new teacher (Han Chun Woo) using martial arts to defend himself. Shioon begs him to teach him after several instances, where the cowardly boy shows he has heart and will fight with all his might he becomes Chun's pupil. Over the course of the first series he shows that he has an affinity for learning martial arts as he was able to perform a high level technique, Lightning Steps, after being shown only once. He could was also able to allign his Ki which external movements allowing him to use Spirit Breaking Strike within a week. These abilities usually takes months, if not years, for high level murim to learn and perfect proving that Yi Shioon may have hidden talents yet to be fully realised.