In Naruto and Uzumaki harem fanfictions, the relationships usually develop through shared experiences. Naruto's determination and growth as a ninja are appealing to the female characters. They might start as friends or comrades, and as they face challenges together like fighting against powerful enemies or protecting the village, their bonds deepen into more romantic - like relationships. Sometimes, a particular event, like a festival in the village, can also be a catalyst for relationship development as it gives them a chance to interact in a more relaxed and personal setting.
These fanfictions typically develop relationships in multiple ways. Naruto's unique abilities as an Uzumaki, such as his large chakra reserve, can make him stand out to the female characters. They may be initially intrigued by his power. As the story progresses, his personality traits like his loyalty, his never - give - up attitude, and his sense of humor play a big role. The female characters also have their own personalities and goals. For instance, a female ninja might be attracted to Naruto because she sees in him the potential to help her achieve her own ninja dreams. And as they interact more, they learn more about each other, leading to the development of deeper and more complex relationships.
Often, they start with Naruto being in some sort of situation where he catches the attention of the female characters. For example, his heroic deeds in battles or his kind heart in helping others. Then, the relationships gradually build as they go on adventures together or train side by side.