I recommend a novel," I Save the Cultivation World by Repaying Gratitude ". This novel also has a plot where the male protagonist follows the female protagonist after his rebirth. The male lead was a powerful shura who had joined the operation to save the world in order to save the female lead. The plot was easy and funny, and it also allowed people to see the sweet interaction between the male and female leads and the touching love story. I hope you like my recommendation.