Yu Jeong-Mok

Introduction
Yu Jeong-Mok is the master of the main character Joo Seo Cheon and is titled the "Soft Smiling Blade" because he is always seen with a soft smile on his face. In the previous timeline, he could only reach the Peak Expert stage and died before he could become a Transcendent Expert. Currently, he is cured of his ailment and had alredy broke through to Transcendent stage years ago.

Appearance
Looks like a kind middle-aged scholar with feminine features.

Personality
Kind, with strict moral code. Willing to walk into a trap if there's even a slight possibility of saving a life. Always sees the good in people and is willing to give them a second chance to do good. Tends to worry about his disciple Joo Seo Cheon a lot and deeply cares for him, but at the same time is a demanding master.

Story
Always had talent for the martial arts. Although skilled, he often experienced injury or setback when using martial arts due to his chronic, unknown illnes. He had the skills to join the "Mount Hua Blossom Swordsmen" but his sickness kept him from getting in.

Joo Seo Cheon cares for his master deeply, and strives to prevent his premature death from previous life caused by illness. Upon returning from the "Periodical Meeting" Yu Jeong-Mok is presented with two Spirit Water Fruit s by Joo Seo Cheon. He consumes one of them, curing his chronic illness and hands the other one back to his pupil, for him to use.

Not long after Yu Jeong-Mok is cured, the 5 Great Elders of Mount Hua send him on a prolonged mission. Before departing, he signs Joo Seo Cheon up for the Lotus Pavilion placement test. At some undefined moment he receives a letter from Joo Seo Cheon, whos at that time is believed dead, with assurance that he is well and request to not reveal for time being that he and Jegal Seung Gae are alive.

He is back on Mount Hua from his mission after 2 years and goes to Hubei to pick up his disciple. He refuses to use stolen Shaolin Booster s ofered to him by Joo Seo Cheon and insist to give them back to Shaolin Temple.

On return trip to the sect he intentionally run into trap set by Oyup, called Long Arm Monkey, The River of Evil sect master. Oyup seeks revenge for being defeated by Yu Jeong-Mok in the past. Unable to win in sword fight he uses poisoned needle on Yu Jeong-Mok. Joo Seo Cheon kills Long Arm Monkey and uses Shaolin Booster to detoxify his unconscious master. After this Yu Jeong-Mok and his disciple return to Mount Hua.