With the snakes, you can focus on their unique abilities. For example, a snake character could be really good at slithering through small spaces to gather information. Their development could involve learning to communicate better with the foxes. They might start out as more solitary but gradually open up to the fox family. You could also give them different personalities, like one snake being really shy and another being bold.
For the fox characters, you can develop them by emphasizing their family bonds. Foxes are known for being social animals, so show how they interact within their family, like the parents teaching the cubs hunting skills. Also, explore their relationship with the snakes. Maybe a fox character starts off afraid of snakes but then overcomes that fear as they get to know the snake family better.
One idea could be that the fox family and the snake family are forced to live together in a shared territory due to some magical force. They initially clash but then gradually learn to coexist and help each other. For example, the foxes' quick hunting skills and the snakes' ability to sense danger could be combined to protect their new home.
The new family members introduced can be developed in different ways. Some could be eccentric, with strange magical habits. By showing how Hermione interacts with them, it can show her adaptability. For example, if there's an old aunt who is always mis - casting spells, Hermione's patience and helpfulness can be highlighted.
At first, there might be a misunderstanding between them. The fem demon foxes might mistake Naruto for someone who wants to harm them. But Naruto, through his actions of kindness and protection, clears up the misunderstanding. This makes the fem demon foxes feel guilty for misjudging him and they start to make amends, which is the start of a beautiful relationship.
For Deku, his character can be developed by showing his struggle to understand Toga's family's situation. He has to balance his hero values with the new perspective he gets from being involved with them. For Toga, her character can grow as she learns to trust Deku more in the context of her family. Her family members can be developed by giving them unique personalities and backstories. For example, one family member could be a former hero who retired due to an injury, and this could add depth to the story.
Sasuke's character might develop by becoming more open and affectionate in the family setting. He starts to let go of his past grudges and focuses more on building a future for his family. Sakura, on the other hand, becomes even more strong - willed and nurturing, using her medical skills to keep her family healthy.
In fanfiction, Sakura may be shown as teaching her medical ninjutsu to her children, which further develops her as a teacher - like figure. Sasuke could be developed through his interactions with his family. For instance, he starts to understand the value of family more deeply and this changes his cold - exterior, making him more relatable.
I recommend the following novels to you: "Fox Commune": A collection of foxes, werewolves, feline girls, city hunters, etc. There is a love story between a fox and a werewolf. The plot is compact and full of highlights. "The Emperor is the Snake Treasure": The main characters are a snake and a fox. Although it is a relationship between a man and a woman, there is also a mysterious love between different races. The plot is deeply touching. I hope you like this fairy's recommendation. Muah ~😗
In fanfiction, Sasuke's character can be developed by exploring his past traumas more deeply in relation to his new family. Maybe he has nightmares about his past actions and Sakura helps him through it, which shows his vulnerability and growth. Sakura can be developed further by having her expand her medical ninjutsu knowledge to protect her family from new and unknown threats. She could also become more politically involved in the village to safeguard the Uchiha family's position.
For Gray and Juvia's relationship, they could have more heart - to - heart conversations. Maybe they share their fears about the future and how to raise their family. As for their relationship with their children, they can have family outings where they teach important values like loyalty and courage, which are big in the Fairy Tail world.
The family members themselves can also play a role in character development. Draco's parents, for example, could start off as cold towards Hermione but then be influenced by her intelligence and kindness. This change in their attitude could then affect Draco and how he views his relationship with Hermione. Similarly, Hermione's family, if included, could show their support for her new connection, which would give Hermione more confidence to explore her relationship with Draco further.