A prevalent theme of a mother's love in Naruto fanfiction is the idea of legacy. Mothers pass on their skills, knowledge, and values to their children. This could be a kunoichi mother teaching her daughter her unique jutsu, or a mother instilling in her son the importance of their family name and honor. Additionally, the theme of hope is often associated with a mother's love. A mother's love gives the child hope in difficult situations, like when Naruto was alone as a child, the memory of his mother's love could give him hope to keep going and become a great ninja.
Protection is a big theme. Mothers in Naruto fanfiction are constantly protecting their children, whether it's from physical threats like enemy ninjas or from emotional harm like bullying or discrimination. Also, the theme of guidance is present. A mother's love is shown through guiding the child on the right path in life, teaching them the values of the ninja world such as loyalty, perseverance, and kindness. For example, a mother might teach her child how to control their chakra better while also instilling in them moral values.