One idea could be exploring the backstory of the main character in the fanfiction. Maybe they had a near - death experience in their childhood that shaped who they are now.
A really cool plot could be about the discovery of a mystery that is related to the brush with death. The characters have to solve the mystery to prevent future near - death situations, and in the process, they uncover secrets about themselves and their world.
Another plot idea could be a love story within the context of 'A Brush with Death Fanfiction'. For example, two characters who meet during a dangerous situation and fall in love as they struggle to survive.
Well, a plot could involve Naruto faking his death as part of a training exercise that was actually set up by the older generation of ninja. They want to see how the new generation will react and grow without Naruto's presence. So Naruto goes along with it, but things get complicated when some of his friends start to suspect it's not real and go on a quest to find out the truth. Also, he could fake his death to test Hinata's loyalty or something like that, but that's a bit more of a soap - opera - like plot.
One idea could be Naruto being sent to the world of Death Note. He could use his ninja skills to try and outwit Light Yagami. Maybe he would initially be confused by the Death Note's power but then use his determination to stop Light from his killing spree. Another plot could involve Naruto meeting the Shinigami. He might learn about the balance between life and death in this new context and try to find a way to bring some of his ninja world's values to this strange new world.
One idea could be that the death goddess has the power to bring back characters from the dead in the Naruto universe, but at a great cost. Maybe she offers Naruto this chance to revive his parents, but in return, he has to sacrifice some of his own chakra forever.
One idea could be a competition among different wizards to claim the title of master of death in a more complex and dangerous magical arena. They might have to face challenges that test not only their magical skills but also their moral compasses.
One plot idea could be Lady Death becoming an ally to Naruto during a particularly dark and dangerous mission. Maybe she has some unique powers that can help him defeat a powerful enemy. Another could be a story where Lady Death is sent to the Naruto universe to collect a soul, but she ends up getting involved in the complex politics of the ninja world. A third idea is that Lady Death takes on a human form in the Naruto world and becomes a ninja herself, with her own set of moral and ethical dilemmas as she tries to fit in while still having her otherworldly nature.
How about a crossover with a post - apocalyptic world? The Angels of Death duo would find themselves in a world full of ruins and scarce resources. They would have to deal with new threats like mutated creatures and other desperate survivors. Their relationship could be further tested in this harsh new environment.
One idea could be to have the main character make a deal with a mysterious entity to save a loved one's life. In this fanfiction, the entity might demand something in return that challenges the character's moral compass.
In 'death meets the avengers fanfiction', a possible plot could be that Death is personified as a female figure. She comes to Earth because she's bored in her realm. She starts causing chaos among the Avengers by making their powers malfunction. The Avengers initially think it's a new super - villain but soon realize it's Death. They then have to find a way to either send her back or make a deal with her. Maybe they offer to perform a great deed in exchange for her leaving Earth and their lives alone.
A crossover with 'Fullmetal Alchemist' could also be fascinating. Maybe Edward Elric discovers the Death Note in his search for the Philosopher's Stone. He would be conflicted because his moral code as an alchemist goes against using such a tool for killing, yet the power it offers could potentially help him achieve his goals in a different way.
One idea could be that Lady Death appears in the Naruto universe during a major battle. Maybe she's there to claim the souls of the fallen, but Naruto, with his unwavering belief in life and his friends, tries to convince her to spare them. This could lead to an interesting dynamic where Naruto has to prove the value of life to a being who has seen so much death.