Another idea is that the dying will flame represents Naruto's unfinished business. In the fanfiction, it could be that there's a threat to the Hidden Leaf Village that Naruto was aware of before his death. His dying will flame then becomes a guiding force for his friends and family to uncover the mystery and save the village. It might lead them to hidden secrets or new allies.
Perhaps the dying will flame is a source of power that different factions in the ninja world are vying for. Some might want to use it for good, to protect and uphold peace, while others seek to corrupt it for their own dark purposes. This could lead to a complex web of alliances and betrayals as characters fight over what Naruto's dying will flame truly means and how it should be used.
One idea could be that Naruto somehow gains the power of the Flame - Flame Fruit. He could use it to create new and powerful jutsu, like combining the fire nature of the fruit with his own chakra to make a super - heated Rasengan. Another plot could involve Naruto using the fruit's power to protect Konoha from a new and powerful enemy that is immune to normal ninja attacks but vulnerable to the unique flames of the fruit.
One interesting plot could be a character with the flame bloodline being exiled from their village due to fear of their power. They then have to journey to prove their worth and that they can use their power for good. For example, they might encounter other outcasts and form a unique group.
A plot could revolve around a new threat that is not part of the original Iron Flame story. Maybe a mysterious group with a different kind of magic that challenges the existing order of dragon riders. This would create new conflicts and alliances.
A possible plot idea is that the little flame dragon gets separated from its family during a great storm. It then has to navigate through unknown territories, facing various challenges such as other dangerous creatures and difficult terrains. Along the way, it meets a group of misfit animals who at first are hesitant to help but eventually become friends and help the dragon find its way back home.
One plot idea could be that in a battle against a dark wizard, Draco jumps in front of a deadly curse meant for Hermione. This could lead to Hermione feeling a deep sense of guilt and obligation towards Draco's family. Another idea is that Draco sacrifices himself to save Hermione from a dangerous magical experiment gone wrong in Hogwarts. His death then spurs Hermione to find a way to reverse time or find a magical cure in his memory.
One idea could be a volatile character who has a strange encounter with a lemon tree in the post - apocalyptic world of Dying Light. Maybe the lemon has some sort of special property that can either cure or mutate further. Another plot could involve a group of survivors who use lemons as a form of currency in a volatile - infested area and the power struggles that come with it.
One idea could be that as Minato is dying, he passes on his special jutsu knowledge to Naruto in a final moment of father - son connection. Kushina, on the other hand, tries to comfort Naruto while also mourning Minato.
Sasuke could be a great main character in such a fanfiction. He has a deep connection with Naruto. If Naruto's dying will flame is involved, Sasuke might be on a journey to understand what Naruto left behind and how to carry on his legacy. He could be conflicted between his own past and the new responsibility that comes with the dying will flame.
One plot idea could be Bloom's struggle to control the dragon flame in a new and dangerous situation. Maybe she's in a realm where the magic works differently and she has to adapt quickly. Another could be the dragon flame being stolen and Bloom having to go on a quest to retrieve it, facing many challenges along the way. And perhaps a plot where Bloom discovers a new aspect of the dragon flame's power that she has to learn to master.
One idea could be exploring the backstory of a minor character in the game. For example, a sidekick who has some hidden skills or a tragic past. Another could be a 'what if' scenario, like what if the virus in Dying Light had a different origin or effect on the survivors. Maybe a fanfiction where the main character has to team up with a group of infected that have retained some of their humanity.