Perhaps the black coach is a cursed object. The white wife's family has some connection to it. The black demons are bound to the coach and when the wife gets too close, they start to haunt her, trying to draw her into their dark world. This could be part of a long - standing family curse that the wife has to break.
In a different scenario, the black coach is a vehicle used by the black demons to travel through different realms. The white wife has a special power or gift that the demons want. They start to stalk her by appearing in the black coach around her. She has to figure out how to use her own power to defeat the demons and free herself from their threat.
A possible storyline could be that the white wife accidentally summons the black demons while exploring an old, abandoned black coach in the woods. The demons then try to possess her or use her for their evil plans.
Another view is that the black coach is a conveyance for the black demon. The white wife is the target. In this case, it might be a story about possession or the fight between good and evil. The white wife has to resist the influence of the black demon that is associated with the black coach. The coach itself could be like a gateway to the demon's realm.
One possible story could be set in a haunted landscape. The black coach emerges from the mist, carrying an unknown and menacing presence. The white wife, perhaps living in a nearby manor, starts experiencing strange occurrences. The black demons could be the source of these hauntings, using the black coach as a means to travel between their dark realm and the world of the living. But again, this is just a speculative story based on the given elements.
Another storyline might be that the blackdemon is actually a misunderstood entity. The black teen has an innate ability to communicate with it. The wife, initially skeptical, comes to believe in the teen's ability as she witnesses the positive changes that start to happen in the town when the teen starts to work with the blackdemon. They then form an unlikely trio to bring peace and prosperity to the community.
In some fictional tales, the black coach might be a magical vehicle. The white wife could be a character who is lured by the black demon. For example, the black demon might use the allure of the black coach to draw the white wife into its dark world, and then she has to face different challenges to escape.
One possible theme could be cultural clashes. The combination of a black coach, white wife, and the idea of a black demon might suggest different cultural or social norms colliding. For example, the black coach could represent a certain cultural element, and the relationship with a white wife might bring up issues of interracial relationships and how society views them. The 'black demon' aspect could add a layer of superstition or fear related to cultural beliefs that are different from the mainstream.
I'm not sure specifically what 'coach white wife black demon stories' are. It could be some very specific local or made - up tales that I'm not familiar with.
There could be stories about a black coach and his white wife facing challenges in a racially diverse community. For example, they might encounter prejudice from some people who are not used to interracial relationships. But they also could find support from open - minded friends and family. Together, they might work to break down racial barriers through their relationship and the coach's work in the community, like coaching kids of all races and promoting unity.
I don't know of any known versions as the name is so unclear. It could be something new that hasn't been spread widely yet.
Love against all odds is a common theme. They might face family opposition or cultural misunderstandings, but their love for each other prevails. It shows that love can be strong enough to overcome racial differences and social prejudices.
From a psychological perspective, these elements can also be seen as archetypes. The white wife could be the archetype of the feminine, the black coach as a masculine or guiding archetype, and the black demon as the shadow archetype. These stories then could be exploring how these archetypes interact within a person's psyche. The black demon might be the part of the self that is feared and rejected, but which has the potential to bring growth if properly integrated into the overall personality. This integration could be the underlying theme of such stories as the characters deal with the presence of the black demon in relation to their relationship (white wife and black coach).