For you who forgot character names and relationships. Here is simplified data :
ML : Heavenly Demon (current name is Hyeok Ryeonsang, but his birth real name : Baek Woongang, he is blood older brother of baek woonjeong. MC : Seok Moonpyeong
Yoon Seung Hyo : Flower Hero, nephew of ML, he called ML great uncle Baek. His face and name is used by ML as cover during his travel/journey outside Demon Cult.
Character from incident 40 years ago : Baek Woonjeong (sword hero, blood related younger brother of heavenly demon), he was married Jaegal Huiryeon (Lady Baek), he had a son named Baek Woogyeong (nick name Jade Qilin, a famed hero from righteous sect). Baek Woonjeong died 40 years ago and left a token that is called The Qilin Token.
There was a group of 5 heroes 40y ago : Baek Woonjeong and Jaegal Huiryeon. Celestial lady pohwa, Namgung Hohye, married the Five Tiger Fist, Gahoe Paeng. Myowon (the old woman monk from chapter 10 who met with Heavenly Demon)
40 years ago, there was incident, The Honam Slaughter. Gahoe (The Five Tiger Fist) & Hohye (Five Tiger Fist's wife), dissappeared. Baek Woonjeong (sword hero) died in Longzhong Mountain, because of The Qilin Token.
There is 3 people who knew the truth about what happened back then. They are Heavenly Demon, Huireyon (Lady Baek), Myowon (The Monk).
Huiryeon (lady baek) denied to accept the truth and accused Heavenly Demon as her husband's killer (ML wasn't the killer), made claim that resulted in people who didn't know the real event to blamed Heavenly Demon. High possibility that it was Gwak Hyo who killed Baek Woonjeong, because he also tried to poison Baek Woongang (heavenly demon).
The Qilin Token can be used 3x to summon Heavenly Demon. 7 years after the incident (33 years ago), lady baek used The Qilin Token on a whimp to called Heavenly Demon and used that meeting to showed her son Baek Woogyeong that then man who came, Heavenly Demon, was his father's killer so she ordered Woogyeong have to kill him to avenge his father.
Heavenly Demon hates Jaegal Family and wants to wiped them all, including Baek Woogyeong (his blood nephew). Heavenly Demon hates Woogyeong because he is (lady baek) Jaegal Huiryeon's son but he also loves him because he is Woonjeong's son (his brother's son) Currently Huiryeon (lady baek) is criticality ill, but she will never share the secret of the real truth of what happened 40 years ago that she guarded all her life (what actually happened in Honam Slaughter incident 40 years ago).
Many many years ago, when ML was a child, The Baek Clan (ML original family clan) was annihilated because the lord of demonic sect at that time taken interest in ML and wanted to make him the demonic sect successor / heavenly demon. Baek Woonjeong was saved by a taoist from kunlun sect. They accidentally met again as adults, but ML never told Woonjeong that he was his older brother and now a Heavenly Demon.
Demonic Sect Character : Eldest Senior Brother, Ho Wanpyeong. 2nd Senior Brother, Gwak Jinmu (son of the traitor, Gak Hyo, & Sohn Yeoyeong). 3rd Senior Brother, Po Yeongui (son of the lord of poison valley, his father wasn't from demonic sect. 3rd senior brother was sent to demonic sect as part of apology because the poison valley clan was unknowingly giving poison to ML, but then the son was taken as student of demonic sect and reach high rank of 3rd senior brother). 4th Junior Sister, Cho Gyoyeon, daughter of Ye Okgyeong (mother) & Cho Jibaek (father). Head Steward Go Heumwon : spy from demonic sect, whom placed in Jaegal family. He infiltrated for 20years already but died during a fight when band of robbers stole The Qilin Token. Ye Okgyeong : one of the three guardian kings of demonic sect. She lives in The Enchanted Flower Estate (mother of 4th junior sister) Gwak Hyo / Hyo Gwak : father of 2nd senior brother. He is the current main Villain. He is obsessed with ML and he is a master of disguise. Sohn Yeoyeong : mother 2nd senior brother and wife of Gwak Hyo. Gwak Hang : patriarch Gwak Family whom was killed by ML during coup of Gwak Hyo.
Gwak Hyo was obsessed with ML and tried to kill him. Long ago he told his wife to deliver drink to ML unknowingly it was poisoned. The poison was obtained from poison valley lord (3rd senior brother's father), the lord thought it was ML order, he never knew it was used to poisoned ML instead. Gwak Hyo killed people in demonic sect, but ML didn't die, defeated him and killed Gwak Hyo's father during the coup, and Gwak Hyo ran away.
For you who forgot character names and relationships. Here is simplified data :
ML : Heavenly Demon (current name is Hyeok Ryeonsang, but his birth real name : Baek Woongang, he is blood older brother of baek woonjeong.
MC : Seok Moonpyeong
Yoon Seung Hyo : Flower Hero, nephew of ML, he called ML great uncle Baek. His face and name is used by ML as cover during his travel/journey outside Demon Cult.
Character from incident 40 years ago :
Baek Woonjeong
(sword hero, blood related younger brother of heavenly demon),
he was married Jaegal Huiryeon (Lady Baek), he had a son named Baek Woogyeong (nick name Jade Qilin, a famed hero from righteous sect).
Baek Woonjeong died 40 years ago and left a token that is called The Qilin Token.
There was a group of 5 heroes 40y ago :
Baek Woonjeong and Jaegal Huiryeon.
Celestial lady pohwa, Namgung Hohye, married the Five Tiger Fist, Gahoe Paeng.
Myowon (the old woman monk from chapter 10 who met with Heavenly Demon)
40 years ago, there was incident, The Honam Slaughter. Gahoe (The Five Tiger Fist) & Hohye (Five Tiger Fist's wife), dissappeared.
Baek Woonjeong (sword hero) died in Longzhong Mountain, because of The Qilin Token.
There is 3 people who knew the truth about what happened back then. They are Heavenly Demon, Huireyon (Lady Baek), Myowon (The Monk).
Huiryeon (lady baek) denied to accept the truth and accused Heavenly Demon as her husband's killer (ML wasn't the killer), made claim that resulted in people who didn't know the real event to blamed Heavenly Demon. High possibility that it was Gwak Hyo who killed Baek Woonjeong, because he also tried to poison Baek Woongang (heavenly demon).
The Qilin Token can be used 3x to summon Heavenly Demon.
7 years after the incident (33 years ago), lady baek used The Qilin Token on a whimp to called Heavenly Demon and used that meeting to showed her son Baek Woogyeong that then man who came, Heavenly Demon, was his father's killer so she ordered Woogyeong have to kill him to avenge his father.
Heavenly Demon hates Jaegal Family and wants to wiped them all, including Baek Woogyeong (his blood nephew). Heavenly Demon hates Woogyeong because he is (lady baek) Jaegal Huiryeon's son but he also loves him because he is Woonjeong's son (his brother's son)
Currently Huiryeon (lady baek) is criticality ill, but she will never share the secret of the real truth of what happened 40 years ago that she guarded all her life (what actually happened in Honam Slaughter incident 40 years ago).
Many many years ago, when ML was a child, The Baek Clan (ML original family clan) was annihilated because the lord of demonic sect at that time taken interest in ML and wanted to make him the demonic sect successor / heavenly demon.
Baek Woonjeong was saved by a taoist from kunlun sect. They accidentally met again as adults, but ML never told Woonjeong that he was his older brother and now a Heavenly Demon.
Demonic Sect Character :
Eldest Senior Brother, Ho Wanpyeong.
2nd Senior Brother, Gwak Jinmu (son of the traitor, Gak Hyo, & Sohn Yeoyeong).
3rd Senior Brother, Po Yeongui (son of the lord of poison valley, his father wasn't from demonic sect. 3rd senior brother was sent to demonic sect as part of apology because the poison valley clan was unknowingly giving poison to ML, but then the son was taken as student of demonic sect and reach high rank of 3rd senior brother).
4th Junior Sister, Cho Gyoyeon, daughter of Ye Okgyeong (mother) & Cho Jibaek (father).
Head Steward Go Heumwon : spy from demonic sect, whom placed in Jaegal family. He infiltrated for 20years already but died during a fight when band of robbers stole The Qilin Token.
Ye Okgyeong : one of the three guardian kings of demonic sect. She lives in The Enchanted Flower Estate (mother of 4th junior sister)
Gwak Hyo / Hyo Gwak : father of 2nd senior brother. He is the current main Villain. He is obsessed with ML and he is a master of disguise.
Sohn Yeoyeong : mother 2nd senior brother and wife of Gwak Hyo.
Gwak Hang : patriarch Gwak Family whom was killed by ML during coup of Gwak Hyo.
Gwak Hyo was obsessed with ML and tried to kill him. Long ago he told his wife to deliver drink to ML unknowingly it was poisoned. The poison was obtained from poison valley lord (3rd senior brother's father), the lord thought it was ML order, he never knew it was used to poisoned ML instead.
Gwak Hyo killed people in demonic sect, but ML didn't die, defeated him and killed Gwak Hyo's father during the coup, and Gwak Hyo ran away.