Jon Kent's age varies depending on the specific comic storyline and continuity. But generally, he's often depicted as a teenager or in his early twenties.
One great 'Jon Kent x Damian Wayne' fanfiction is 'The Bond Beyond'. It delves deep into their relationship as they face a common enemy. The way the author portrays their contrasting personalities yet growing closeness is really engaging.
You need to consider their different backgrounds. Superman has his Kryptonian heritage and his experiences in the Injustice 2 world. The reader could be from a more ordinary background. Show how these differences can both create friction and also draw them together. For instance, the reader might teach Superman about the simple joys of Earth life that he's forgotten in his pursuit of justice, which deepens their connection.
Once upon a time, a meteor was hurtling towards Metropolis. People were in a panic. Superman sensed the danger and flew into the sky at supersonic speed. He used his super strength to push the meteor away from the city, saving everyone. It was a simple yet heroic act that made him a true savior of the day.
Their contrasting personalities make them an interesting pair. Damian is often seen as the more serious, dark - edged character due to his upbringing in the Bat - family. Jon, on the other hand, is full of youthful exuberance and has a more positive outlook, being a part of the Super - family. This contrast can lead to great character interactions in fanfiction.
There could be a fanfiction where Damian and Jon have to go on a quest to find a lost Kryptonian artifact. Along the way, they learn more about each other's cultures. Damian gets to understand more about Krypton through Jon, and Jon learns about the ways of the Bat - family from Damian. This story could explore their friendship and how they grow as individuals.
Another common theme is growth. As they are young characters, they are constantly evolving. Fanfictions often show their growth in terms of their powers, their understanding of the world, and their relationships. This could be something like Damian learning to be more open - minded from Jon, and Jon learning about the importance of discipline from Damian.
Another theme is adventure. Writers like to send them on various missions together, whether it's saving the world from a new super - villain or exploring some mysterious part of the DC Universe. Their combined powers and skills make for exciting adventure stories.
Obviously, Batman and Superman are the most prominent. Their complex relationship, which is a mix of friendship, rivalry, and ideological differences, makes them central to any fanfiction in this universe. However, characters like Wonder Woman also often play important roles. In some fanfictions, she may be caught in the middle of the Batman - Superman conflict, trying to mediate or having her own stance on the events that unfold.
One interesting storyline could be a redemption arc for Superman. In the Injustice universe, Superman has gone down a dark path. A fanfiction might explore how Batman tries to bring back the good in him, with lots of emotional confrontations and moral debates between the two.