One common theme is sacrifice. Just like in the original Naruto series, family members in these fanfics might sacrifice their own well - being for the sake of the family. For example, a character could give up their dreams to protect their family from danger. Another theme is redemption. A family member who has made mistakes in the past might strive to make up for it through their love for the family. Also, the theme of unity is often present. The family comes together to face external threats, showing that their love for each other makes them stronger as a unit.
A common theme is protection. Family members will do whatever it takes to protect each other. In these fanfics, it could be protecting from other ninja clans or from some dark force. There's also the theme of growth. The love within the family helps individual members to grow. For example, a young ninja might gain confidence and become stronger because of the love and support of their family. And sometimes, there's the theme of discovery. Characters might discover long - lost family members, and the love that develops between them becomes a central part of the fanfic.
Well, often there's the theme of forgiveness. In Naruto fanfics focused on family love, characters may have to forgive family members for past wrongs. For instance, if a family member was involved in something that hurt the family in the past, through the power of love, forgiveness becomes possible. And then there's the theme of inheritance. Family traditions, jutsu, or values are passed down from one generation to another. It could be a special ninja technique that is only taught within the family, and this inheritance is tied to the love and connection within the family unit.