Jingshen Xi is the uncle of Sao, who is one of the many villains who destroyed many lives by his own selfish needs and is irredeemable. He used to be a kind person, although there were times that his intrusive thoughts just wanted to destroy others out of instinct, later on he slowly became more terrible and wanted to become more powerful to take control of the prosperous sect that the twins both rule over.
Jingshen Xi is a highly smart individual, using emotions and their connections to him for his own gain, rarely fighting at all as his minions do it for him. He did not learn from the sect's correct teachings when he was young, making him highly arrogant.
His morals are rock bottom, as his own hatred becomes a weakness for himself, once he showed humanity, this led to his niece taking revenge over what he has done for her entire lifetime.
"Such fools..! You can't even think clearly."
"Selfish, hm? When you're the one who's two faced."
His minions are mostly from the Xi Sect, but some of them are from MG Conglomerate, which I will explain later on in the next chapter.
The minions are also unredeemable, and do not need any sympathy whatsoever. He has traits of being a sociopath, he is always aware of himself, and is highly apathetic towards everyone, including family members which helped being overly detached as a result. Unlike Saori Xi who is highly empathic towards others.
Saori Xi is the other twin of Jingshen Xi, she was a great leader alongside Jingshen, and fought countless battles which many considered her stronger than her brother, leading to Jingshen's hatred and envy towards her.
Saori Xi is a supporting character surprisingly, treated to be in Sao's backstory mostly. She is always in the background, always there. She met and loved a man who ran as an organized crime leader, and that made Jingshen very concerned at first, until Sao arrived due to Saori's love for her husband. This created a perfect time for Jingshen to take over entirely to the sect, pretending to be just as caring as Saori, until his cover drops to show how despicable one human can be.
Saori Xi's fighting style consists of mostly traditional Tai Chi that was passed around in their sect, and most of the techniques stem from generation to generation, creating a new techniques when she used to be a mentor for the new sect members who were willing to learn the old ways, therefore she was considered a warrior at this time. Note that her name was officially changed after marrying. Saori Xi used to be Jing Xi.
"Yes, one day you'll grow up to be a warrior like me someday.."
"Leave this household at once brother. You are truly despicable!"
Outside of combat, she is a great character who was willing to push the sect into the strongest and yet she enjoys the small things in life, hoping to be as graceful as her twin brother. In time, Saori is a hardworking leader, pushing others to be their best, while also doing many tasks to help those in need. Her personality is strong hearted, a virtuous leader just like the many other leaders before her in the sect, and inspired Sao to do the same.
But after Jingshen's true nature was shown, the sect was divided into two groups, the old generation of sect members and the minions who follow Jingshen Xi's every word. This created an undying animosity between the two twins, during the time Sao was just a kid.
The battle was at midnight, Jingshen and Saori clashed, his selfish beliefs and her traditional beliefs clashing together until he cheated at the duel by already injuring Saori using his minions after his heavy defeat.
This led to Sao being highly traumatized after seeing Saori's corpse in the river; Jingshen was attributing and selling her to taking memory tablets to forget about it. Although the traumatic memory returns in Sao's adulthood, when she stopped taking the memory tablets.