It would change the power dynamics. With her succubus powers, fem Naruto could disrupt the traditional balance of strength. For instance, she might be able to defeat stronger opponents more easily by using her charm and allure.
One possible plot could be that Naruto, in his journey, stumbles upon a succubus. The succubus might initially be attracted to Naruto's strong chakra. She could try to use her powers on him, but Naruto, being Naruto, resists with his determination. Maybe he tries to understand her instead of immediately fighting, leading to an unlikely friendship.
The plot might revolve around how fem Naruto struggles to control her succubus nature. She may have to deal with the temptation to use her powers for less - than - noble purposes. She could be in a conflict between her ninja values and the instincts that come with being a succubus.
Naruto would react with his usual enthusiasm. He'd see the succubus as someone he could potentially help or befriend. He might not fully understand what a succubus is at first, but his kind nature would lead him to approach her without fear. As for Kakashi, he'd be more guarded. He'd analyze the situation carefully before making any moves, while also keeping an eye on Naruto to make sure he doesn't get into too much trouble.
A common theme is the clash of cultures. Naruto comes from a world of ninjas and now he's in a world with devils, angels and succubi. Another theme is power - how Naruto's ninja powers compare to the supernatural abilities in Highschool DxD. Also, relationships, like how Naruto might interact with succubi characters.
A succubus could fit in as a new type of threat. Since the Naruto world already has various threats like the Akatsuki, a succubus with her seductive powers and ability to drain energy could be a unique enemy. For example, she could target the tailed beasts to gain their powerful chakra.
Perhaps in this fanfiction, Naruto is lured into the realm of the Succubus Queen. At first, he is in danger, but he uses his ninja skills and his positive energy to resist her temptations. As time passes, the Succubus Queen sees something different in Naruto compared to other humans she has encountered. This makes her change her ways, and they might even fall in love, leading to a story of self - discovery for both of them.
The information you provided is not detailed enough to determine which character the succubus is. Please provide more context or background information so that I can better answer your questions.
Maybe a group of succubi are summoned accidentally in the Naruto universe. They cause chaos as they are used to a different kind of world. Naruto and his friends have to figure out how to send them back without harming them, while also dealing with the succubi's alluring powers that are affecting some of the villagers.