The cloak could make Naruto more confident. If it has special powers, he would feel more capable and in control. For example, if it gives him the power of invisibility, he might start to take more risks in battles and become bolder in his strategies.
One idea could be to have a character from Naruto end up in the Cloak and Dagger universe. For example, Naruto himself could be transported there and his unique abilities like the Rasengan would be a shock to the characters in that world. He might team up with Cloak and Dagger to fight against a common enemy, perhaps a group that is trying to steal the powers of both universes.
Obviously, Naruto is likely to be one of the main characters since it's about his Kyuubi cloak. He is the one who wields this power. Sasuke might also be a main character as he often has interactions with Naruto and his new power would surely affect their relationship. Sakura could be in there too, as she is part of Naruto's team and would be involved in any battles or events related to Naruto's use of the Kyuubi cloak.
First, you need to do your research on both Naruto and Cloak and Dagger. Know the characters, their powers, and the settings well. For example, in Naruto, the different clans and their jutsus are important elements. In Cloak and Dagger, the light and dark powers and the social issues in their world matter. Then, come up with a unique plot. Don't just copy existing storylines. You could start with a situation like a dimensional rift that brings the two worlds together.
One interesting idea could be the unique ways Naruto combines his skills with the power of the Kyuubi cloak. For example, he might develop new jutsu that are only possible when in the cloaked state. Another idea could be how the cloak affects his relationships with other characters. Some might be in awe of his new power, while others could be a bit fearful.
Sure. There's a fanfic where Naruto's cloak is actually a living entity. It can communicate with Naruto telepathically and guide him in battles. It has its own personality and backstory which makes the plot really unique.
Kabuto could also be a great antagonist. After learning so much from Orochimaru, he could see the potential in the cloak and dagger and want to use them to prove himself as a powerful ninja. He could be constantly trying to outwit Naruto and take the items for himself.
Well, perhaps the cloak has a hidden power that is only unlocked when Naruto faces his greatest fears. It could be a power that not only enhances his physical abilities but also his mental strength. For example, when he's in a tough fight and on the verge of giving up, the cloak activates this power and he suddenly has the strength to keep going. Also, the cloak could have a connection to the Sage of Six Paths, and through it, Naruto discovers new secrets about his heritage.
One idea could be exploring how the chakra cloak affects Naruto's relationships. For example, his friends might be in awe or a bit intimidated at first. Another could be a story where Naruto has to control the chakra cloak in a completely new and challenging environment, like an alternate dimension with strange energy sources that interact with the cloak.
He can probably use the basic form which just covers his body partially, like just his arms or legs at first. Then there might be a more advanced form that fully engulfs him. Maybe there's even a super - charged form where the cloak has some special markings or glows with a different color.