1x3 - The Last Immortal

To cancel her master-servant covenant as early as possible, Yin wants Gu Jin to cultivate the Mirror Flower Water Moon Array with her. However, Gu Jin is not motivated and always drags Yin down. He even pranks her by using the master-server covenant. The relationship between them gets worse. In truth, Gu Jin always helps Yin, who is a jinx, to solve her troubles. He is acting arrogant yet taking care of her at the same time.