In the Attack on Titan manga, Jean remains alive. The story doesn't have his character meeting a fatal end. He continues to play a significant role and face various challenges along the way.
Here are some title ideas. 'Jean & Marco: A 'Attack on Titan' Fanfic'. This is simple and straight to the point. Then there's 'The Jean - Marco Dynamic in 'Attack on Titan' Fanfic', which emphasizes their relationship. Also, 'Jean and Marco's Journey in 'Attack on Titan' Fanfic' could work well as it gives a sense of an adventure or story that unfolds between them.
In the 'Attack on Titan' Marco x Jean fanfiction, their relationship is often complex. They are comrades in the harsh world within the story. Jean initially may seem a bit self - centered, but Marco has a positive influence on him. Their bond is one of mutual growth, as they face the terrors of Titans together and also deal with the politics and rivalries within the military.
A very popular one is 'Jean in the New World'. In this fanfic, Jean is placed in a different and unexpected situation. It's interesting to see how he adapts and uses his skills and intelligence to navigate through the new challenges.
A popular one is 'Jean in the New World'. In this, Jean finds himself in a completely different world and has to adapt. It's really exciting as it shows his resilience and how his skills are put to the test in this new environment.
You can start by looking on Archive of Our Own (AO3). It has a vast collection of fanfictions, and there are many dedicated to Jean Kirstein. Just use the search bar and type in his name.
One common theme is friendship. They support each other through the difficult times in the 'Attack on Titan' universe. Another theme could be growth. Jean's character development, often influenced by Marco, is frequently explored. Also, loyalty is there, as they are loyal to each other and to their cause of fighting Titans.
Some fanfics might explore a romantic relationship between them in a more secretive or forbidden way. Given the military setting and the overarching plot of Attack on Titan, their relationship might be something they have to hide. This adds an element of tension and drama to the story, as they navigate their feelings while also dealing with the threats of the Titans and the politics within the walls.