The contrast between their characters. Thresh is a dark and menacing figure, while Sona is more of an ethereal and benevolent presence. Their interaction in a fanfic can create a really interesting dynamic.
Yes, there are some great ones. You can start by looking on fanfiction websites like Archive of Our Own. Just search for 'draven x sona' and you'll find a variety of stories with different themes and writing styles.
Another theme is the exploration of different worlds or abilities. Sona has her own unique powers and world in the League of Legends universe. Fanfictions often explore how the OC interacts with this world and Sona's abilities, such as in 'Into Sona's Realm' where the OC gets to experience Sona's magical realm first - hand.
One common theme is the exploration of their different personalities. Naruto is often outgoing and impulsive, while Sona is more composed. Another theme is friendship development, as they come from different backgrounds in their respective fictional worlds.
Perhaps it could be a fanfic where they meet during a grand magical event. Plague Knight is initially distrusted due to his association with plagues, but Sona sees the good in him. They then team up to stop an evil force that is threatening to disrupt the harmony of their world. The story could explore how their different powers complement each other.
One common theme is the clash and combination of different power systems. Naruto has his chakra - based ninja powers, while the DxD universe has its own system of magic and power levels. So, seeing how these interact is a big part of it. For example, Naruto might teach Sona some ninja techniques.
One popular 'issei x sona fanfic' could be 'A Chance Encounter'. It beautifully weaves a story of how Issei and Sona meet in an unexpected situation and how their relationship develops from there. Their interactions are full of charm and the plot often has interesting twists.
A common theme is friendship. The oc might start as a friend to Sona Sitri and then the relationship could develop further. Another theme could be adventure, where they go on quests together in the High School DxD universe.
Well, one key element is the combination of Naruto's world and the Sona group's characteristics. Naruto's ninja skills and the Sona group's special traits often create interesting scenarios. For example, Naruto's ability to use shadow clones might be combined with the Sona group's magic or powers in some fanfics.