Perhaps the main character is a female shinobi with unique abilities. She might be underestimated at first but turns out to be crucial in the 'forest of death time shinobi story'. There could also be an old and reclusive shinobi who lives in the forest and acts as a guide or an obstacle for the main characters. His knowledge of the forest and its secrets would be a key factor in the story.
It could be a young and talented shinobi who is on a journey to prove himself in the forest of death. He might be the main character, facing all the challenges bravely.
The 'forest of death' is often a setting in ninja stories. It might be about the adventures and challenges that shinobi (ninjas) face in this dangerous forest. Maybe there are battles against fierce creatures, rival shinobi groups, or they are on a quest for some rare item or power hidden within the forest.
I don't know for sure, but it could be a young and talented shinobi who is the protagonist.
In 'dark shinobi story', there could be a main character who is a shinobi with a troubled past. Maybe there's also a mentor figure who tries to guide him back from the dark path he's on. Another possible main character could be an antagonist, perhaps a powerful shinobi from a rival clan who is involved in the events that push the 'dark shinobi' further into darkness.
Since I don't know the specific 'the dark forest forest story', I can't say for sure. But it could be a brave adventurer, a wise old hermit living in the forest, or perhaps some magical creatures like fairies or elves if it's a fantasy story.
In the 'dark release shinobi story', the main character is probably the shinobi possessing the dark release. But other important characters could include the shinobi's family members. For example, a father or mother who has some knowledge about the dark release and its origins in their family. There could also be a love interest, a fellow shinobi who is initially intrigued by the main character's power but later falls in love with the person behind the power. And don't forget about the antagonist, perhaps a powerful shinobi from another clan who sees the main character's dark release as a threat to their own clan's power and supremacy.
Perhaps there is a mysterious shinobi who appears out of nowhere and holds the key to the new code. Alongside him or her, there could be a group of shinobi from different clans. They may start off as rivals but as the 'new code shinobi story' progresses, they become allies. Each character would bring their own skills, like stealth, weapon mastery, or special powers related to their clan heritage, to the story.
The main characters in 'the forest story' could be a diverse group. There might be an old wise owl that knows all the secrets of the forest and gives advice to other animals. There could be a group of mischievous monkeys that are always causing some sort of chaos in the forest. And perhaps there is a young and brave deer that is on a journey to find a new grazing ground. If there are human characters, it could be a family who has moved to live near the forest and they have to learn to co - exist with the forest's inhabitants.
The main characters are Naruto and Sakura. Since it's related to Naruto, Naruto is a must - be - there character. And Sakura is often paired with Naruto in many fanfictions, especially when the setting is in the Forest of Death. They are the two most likely to be the focus in this kind of fanfiction.
Since I haven't read 'The Forest of Time and Other Stories' thoroughly, it's hard to say exactly. However, based on the title, there might be characters who are on a journey through the forest of time. They could be ordinary people at first, but as they enter this special forest, they might develop unique qualities or roles. There could also be some sort of guardians or inhabitants of the forest that play important parts in the stories.
I'm not sure specifically without more context, but they could be shinobi with powerful Kekkei Elem abilities. Maybe there's a young, talented shinobi who is just discovering their power.