My Yandere Disciple Is So Clingy, I Can't Take Her Teasing

[Two male leads + master and disciple + both reborn + younger love interest + sweet romance = yandere wicked disciple X ascetic master]

Note: The wicked disciple is the main viewpoint character.

Gu Shiyi is reborn. All he wants after being reborn is to find his master, who in his previous life cared only about vanquishing demons and purging evil, and make him pay!

Shen Yiheng is reborn too. In his previous life, he cultivated the merciless sword path and knew nothing of love. His bond with his disciple was thin, and he even ran his sword through Gu Shiyi, who was a member of the demon clan, all to exterminate demons and uphold the righteous path.

Only after being reborn does he realize how many things he did wrong. With the help of the Villain Conquest System, he gradually mends the regrets of the past, using his own way to treat Gu Shiyi well without reservation and make up for how he failed to honor his disciple's sincere devotion in their previous life.

All so he can raise a demon who might become the final boss into an optimistic, positive young disciple.

As they spend every day together, Gu Shiyi finds it harder and harder to understand the master who is so different from the one in his previous life: gentle and considerate, and kind only to him.

So Gu Shiyi decides to change his plan to make his master fall for him and then cruelly abandon him. Instead, he'll let go of the grudges from his previous life, keep his master by his side, and slowly repay his kindness.

From then on, people never saw Shen Yiheng, who had done nothing but cultivate in seclusion. But the cultivation world gained a mysterious pair of Daoist partners who were inseparable, one breathtakingly beautiful, the other as cold as ice.