it is a novel of transmigration with the male protagonist fulfilling the requests of certain souls. It has several arches, the first if not bad memory is of the phoenix man who abandons his wife, the original soul wanted his lover to be happy or something like that but the ml did not fulfill his request he married and had a daughter there is also a historical arc where he becomes emperor while his sons (a daughter and a son) fight each other for the throne. Another I remember is that he is the uncle of the protagonist, he divorces his wife who complains about him all the time with his son and sells food in a street stall, later he has several restaurants and marries a blogger. I read other arcs but I don't remember much it would be helpful if you could help me find this novel
Not related but there is korean movie called "because I love you" in which ML soul goes into few persons to help them fulfill their wishes/ love related predicament. It's quite good.