Well, one way is to have all the main conflicts resolved and characters reach a clear conclusion in their arcs. You could also add a final thought or message to leave the readers with something to ponder. Sometimes, a simple 'The End' works too, but it's a bit plain.
Well, 'invincible mark and eve fanfiction' could cover a wide range of themes. It might explore their relationship in different scenarios. For example, it could show their adventures together, how they support each other in battles. Mark might use his powers in unique ways to protect Eve, and Eve could use her intelligence to assist Mark. It could also delve into their emotional bond, like how they deal with the pressures of being in a world full of challenges while being in a relationship.
Overall, the ending of Invincible comics ties up loose ends and leaves a lasting impression. It has a mix of action, drama, and emotional moments that bring the story to a satisfying close.