Another plotline might be the bringer of death's journey of redemption. They start off as a cold - blooded killer but then meet someone or experience something that makes them question their ways. They could then try to use their powers for good, which would be a difficult transition as they are feared by many. This could create a lot of internal conflict within the character as well as external conflict with those who don't trust their change of heart.
Maybe the bringer of hope is an outcast in society at first. But as they start showing small acts of kindness and hope, more and more people are drawn to them, and they end up leading a revolution against an oppressive regime. The story could follow their journey from being alone to becoming a great leader.
A 'bringer of death fanfic' could potentially explore themes of mortality, power, and the impact of a character who brings death. It might focus on a dark and often mysterious figure that has the ability to end lives. This could create a very intense and often brooding atmosphere in the story.
Well, it could involve a plot where the wizarding world discovers Harry's immunity and tries to either use it for their own gain or tries to figure out how it happened. There could be a race between the good and the bad characters to unlock the secret of his immunity. Maybe Harry has to go on a journey to understand this strange new power within him, and along the way, he meets new allies and enemies.
Perhaps in the fanfic, Shining Armor is poisoned by an unknown enemy within Canterlot. His slow death could be a time of mystery and investigation, as Twilight Sparkle and her friends try to find out who is behind it. His death might also lead to political unrest in Equestria as his role in the Royal Guard was crucial.
One possible plotline could be that Naruto fakes his death to protect the village from a powerful enemy who has a vendetta against him specifically. He might do this to draw the enemy out and expose their weaknesses.
Maybe in the fanfic, Death is not a traditional Grim Reaper - like figure but rather a form of an evil curse that has been plaguing the ninja world. Naruto, being the hero, is the only one with enough positive energy and determination to face it. He could start by gathering allies who have also been affected by this 'Death' curse. Together, they form a plan. Naruto would be the vanguard, using his speed and strength to break through the defenses of the curse - based Death and then use his willpower to shatter it completely.
One possible plotline could be that Lydia dies unexpectedly, and Beetlejuice, who has grown attached to her, goes on a quest to bring her back. He might have to face various challenges in the afterlife or deal with other supernatural beings who oppose his plan.
One possible plotline could be the OC's struggle to fit in. With Aphrodite as a mother representing love and beauty, and Death as a father, he might not be fully accepted in either the realm of the living or the dead. So he has to find his own place in the world.
One possible plotline could be the physical death of the main superhero character due to a powerful villain. This would lead to chaos in the world that the superhero once protected, and the remaining characters would have to deal with the aftermath.
It could also be that Qrow's death is related to his own self - destructive tendencies. His alcoholism and the constant negative effects of his semblance on his psyche might lead him to make a rash decision. For instance, he might feel that he's a burden to his team or family because of his semblance always attracting bad luck. So, he decides to go on a solo mission against impossible odds, fully expecting not to come back alive.