Another interesting fanfic idea could be a prequel of sorts. Focus on the backstories of the main characters, especially how they came to be in the situation they are in at the start of the series. For example, exploring how Hiro and Zero Two first met or the early training days of the other Franxx pilots.
One idea could be a 'what if' scenario where the characters from 'darling in the franxx' are transported to a modern - day Earth. They would have to adapt to a world without the threats they faced in their original setting and deal with things like modern technology and social norms.
A common interesting plot point is the power exchange. For example, when characters from Darling in Franxx gain some of Naruto's chakra - based powers. It makes for really exciting battle scenes as they use these new powers in their own mech - combat style.
One interesting crossover could be the sharing of combat skills. For example, the pilots in Darling in the Franxx might learn some of the ninja techniques from Naruto characters. They could incorporate things like shadow clones into their battle strategies, which would add a whole new dynamic to their fights against the Klaxosaurs.
One interesting story is about the growth of the main characters. They start as somewhat naive pilots but gradually develop strong bonds and a sense of purpose in protecting their world. For example, Hiro and Zero Two's relationship evolves from a rather strange and tense one to a deep, mutual understanding and love that is based on their shared experiences in battles and their quest for identity within the franxx units.
Another theme is self - discovery. The reader, who is inserted into this strange and complex world of Darling in the Franxx, often has to figure out their place in it. They learn about their own strengths and weaknesses while interacting with the pre - existing characters and the unique situations in the franxx world. This theme of self - discovery can be really inspiring as it shows the growth of the reader - inserted character throughout the fanfic.
The main themes in 'Darling in the Franxx' include self - worth. The characters struggle with their place in society and how they are valued. Also, friendship and loyalty play a big part as the characters fight together and rely on each other. And of course, the theme of growing up and maturing is quite prominent as they face various challenges.
Zero Two is a great character to focus on. Her complex backstory, her unique personality, and her relationship with Hiro offer a lot of material for a fanfic. You could explore her past more deeply, like her experiences as a half - klaxosaur, half - human and how that has shaped her into the character we see in the series.
Yes, it is finished. You can find the complete story now.
Yes, it is. The manga has reached its conclusion.
No, it's not based on a novel. It's an original anime production.
One great 'Naruto and Darling in Franxx fanfic' could be those that focus on crossovers of the characters' unique abilities. For example, a fic where Naruto's ninjutsu is combined with the mech - piloting skills in Darling in Franxx. It creates really interesting scenarios.