Just me going to post some stories, not all are real but they are fun to read.
There was a man living in a village with his wife. He works all day and his wife just stays home to clean up and make food. One night he had a dream. He was underwater but can breath just fine. When he turned his head to scan around he saw something swim in the far. He woke up in a sweat, only to find out his bed is wet. His wife asks if he is alright and not tired from all the work he did, he said that he is alright and was only a nightmare. The next night he had the same dream. Underwater and something swimming around him. He tried to swim away but he felt as if he wasn't going anywhere. When the thing got closer he woke up once again in a wet bed. His wife is now worried that something is happening and goes to the villages witch doctor. The witch doctor says that he should stay away from water for a week or you'll never walk up with him besides you again. So she tried to find out what was making his bed wet when he goes to sleep. All day she search for holes in the roof, water table to high, or something. But when the sun was setting she found none. When her husband was about to go to bed she said he can sleep on her side of the bed. He, doesn't know she went to see the witch, asked questions on why he should. She said that she is worried and scared about his dreams and wants him to feel a bit closer to her on the night. He agreed and they went to bed. He had the same dream where he is underwater. After so many of the same dreams he got sick of it and tried to swim after the shadow fish. He got close to it to see it's face and it is a half fish and half women. He fell in love with it and she took him away to her shell. The next morning the wife's bed is wet. Worried that he is gone she turned to see nothing but a necklace and water.
This is a story I made up using the creature Nhang. I know that they don't go into dreams but that wasn't a dream he was having. The Nhang is a water spirit female that drags men into the water and sucks their life. The Nhang somehow put water over him so she can pull him into the water into her realm. Whenever he gets scared he just came right back out of the wet bed. If you guys have any good stories or like to make some up I don't mind it if you post it here :D