Boolsung

Boolsung, otherwise known as the "Buddhist Star" of the Twin Stars, One Demon, is one of the peak existences of Murim and the Orthodox Sects alongside the Sword Star, and Heavenly Demon within the divine cult. It is later revealed that he is the master of the Second Jade Knife of the Justice Blood Sect.

As one of the Twin Stars, he is quite friendly with the Sword Star and openly swears at him, calling him an "asshole". After the two stars ally themselves with Hyuk Woon Sung in the battle against the Cult of the Inverted Sky the divine beings all become friendly with each other. He is also close enough with Jegal Sung, the master of the first jade knife to call him "the old man of the Jegal family" as the master of the second jade knife. He says "Amitabha Buddha" at the end of every sentence.

Boolsung possesses extremely benevolent character, and wisdom beyond his years as the Buddhist Star, as he explains the hypocrisy of calling the demons of the divine cult inherently evil versus calling the people of the Martial Alliance inherently good. "Black paper is not naturally evil, nor is white paper naturally good. They are both paper, but the appearance of the paper leads people to think otherwise. Black and white are simply colors, not standards for dividing good and evil. Also, the division of black and white is just a human standard…”

He is the descendant of one of the supreme Five Skies Beyond the Heavens, the Buddhist Sky. In the final fight against the Inverted Sky Lord, Geomsung and Boolsung team up to fight the deity in order to provide a distraction and cover for the recovering Hyuk Woon Sung but are easily defeated and have their limbs and weapons broken, but providing enough time for the Heavenly Demon to break through and kill the lord. Thus by the end of the story, he is acknowledged as one of the heroes of Murim alongside the other divine beings and the Justice-Demon Alliance.

Techniques
As the Buddhist Star, he has access to the Shaolin's supreme and basic techniques such as:

Hundred Steps Divine Fist (百步神拳）

Great Arhat's Fist

Golden Vajra Unmoving Body Skill (金剛不動身)