Fairy King's Plan to Raise Witches

What? The male protagonist died soon after his appearance? Ha? You found a stand-in for the male protagonist, but failed again? Ah? He was about to commit suicide and was saved by the Immortal Lord? Immortal Lord: I saved you, how are you going to thank me? Hostess: The little girl must fast and bathe, and burn incense for the Immortal Lord every day, so that the Immortal Lord's incense will continue to flow! Immortal Lord: I will teach you a way, you don't have to be surrounded by smoke, but you can also continue the "incense" for me...