Yandere****************

[Twin male protagonists + master and apprentice + twin students + young age + sweet pet = sick and spoiled disciple x ascetic master] Note: This article is from the perspective of the villain. Gu Shiyi was reborn. After his rebirth, he only wanted to find the master who only wanted to kill demons and eliminate evil in his previous life to collect debts! Shen Yiheng was also reborn. He practiced ruthless swordsmanship in his previous life, but he didn't understand emotions and had a weak relationship between master and disciple. He even pierced Gu Shiyi, a demon, with one sword, just to destroy demons and promote righteousness. After his rebirth, he realized that he had made many mistakes. With the help of the villain strategy system, he repaired the regrets of the past step by step. In his own way, he treated Gu Shiyi unconditionally and made up for the debt of his sincere heart to his apprentice in his previous life. Just to train the demons who may become big bosses into optimistic and positive good disciples. After spending time together day and night, Gu Shiyi became increasingly unable to understand that his master was completely different from his previous life. He was gentle and attentive but was only kind to himself. Therefore, Gu Shiyi decided to change his plan of abandoning his master after his fall to letting go of his previous grudges, keeping his master by his side, and slowly repaying his kindness. From now on, people have never seen the Shen Yiheng who only knew how to practice in seclusion. However, in the world of immortality, there is a pair of mysterious Taoist couples who stick together like glue all the time. One is as beautiful as the world, and the other is as cold as ice.