Yes, there are significant ethical issues. The concept involves betrayal within family relationships, which goes against the values of loyalty and respect in family and friendship. Such stories promote inappropriate and unethical behavior.
There are many other good topics about friendship and relationships that are more worthy of discussion, such as how friends support each other in difficult times.
There are a lot of positive and clean - cut story types. For example, stories centered around community building, where neighbors come together to overcome challenges. Also, stories about animals and their unique behaviors can be both educational and entertaining without any inappropriate content.
Another option is family - centered stories of growth and learning. Such as a child learning a new skill with the help of their family members, or a family working together to build a treehouse in their backyard. These types of stories promote positive family values.
Here is one more. A family had an old dog that was getting sick. Instead of giving up, they all worked together to take care of it. The kids took turns walking the dog gently, and the parents made sure it had the right medicine. The dog slowly recovered, and this experience brought the family even closer together as they shared the love and care for their furry friend.
Definitely not ethical. In a normal and healthy society, family relationships are respected. The idea of 'cuckold by son's best friend' in erotic stories goes against the values of loyalty, respect within a family, and healthy sexual ethics. It can have a negative impact on people's perception of proper relationships if such themes are given any form of acceptance.
Some good alternative topics could be 'A Day in the Life of a Space Explorer'. You can describe the amazing things they see in space, like different planets and nebulae. 'Friendship on a Desert Island' is also interesting. It involves the story of how people survive on an island and form deep friendships. And 'The Mystery of the Old Mansion' allows for a lot of mystery and suspense as the characters explore the spooky mansion.
There are many. For example, two best friends who grew up together in a small town. One of them had a dream to become an artist but was too shy to show his works. The other friend organized an art show in their local community center, inviting all the neighbors. It was a huge success and gave the first friend the confidence to pursue his art career further.