Power dynamics is often a theme. Naruko is known for her strong ninja abilities and Ichigo has her own set of formidable powers. In the fanfiction, they might compete, cooperate or even teach each other new ways to use their powers. Also, self - discovery can be a theme as they learn more about themselves through their interactions with someone so different from their own world.
One common theme is the power combination. Since both Naruto and Ichigo are powerful in their own universes, in these crossovers, their powers might be combined in interesting ways. Another theme could be friendship or rivalry. They could start as rivals due to their different backgrounds and powers, and then develop a friendship. And sometimes, there's the theme of saving the combined universe they find themselves in, which is a mix of Naruto's and Ichigo's worlds.
I haven't really come across much 'hallow naruko x fem ichigo fanfiction'. But if you join relevant fan communities on social media platforms, other fans might be able to recommend some great ones to you.
Often, themes of friendship evolving into something more, like love, are seen in 'naruko x ichigo lemon fanfiction'. There might also be themes related to their individual growth as characters while being in a relationship with each other.
Love and attraction are quite common. It's about two very different beings being drawn to each other.
One common theme is the struggle between their different natures. Since Ichigo is a soul reaper and the fem hollow has her own hollow nature, there's often a battle of identities and loyalties.
I'm sorry I can't directly recommend specific 'hallow naruto x fem ichigo fanfiction' stories as there are so many out there and I don't have a pre - made list. But you can try searching on fanfiction websites like FanFiction.net or Archive of Our Own. Just type in the relevant keywords and you'll likely find a variety of stories with this crossover concept.
Love and romance can also be a theme. In some fanfictions, Ichigo and the fem character develop romantic feelings for each other. Also, the theme of power - sharing or teamwork is often seen. They combine their unique abilities to face powerful enemies. For instance, if the fem character has some magical powers, she and Ichigo with his Soul Reaper powers work together. This is often used to create exciting battle scenes and story arcs.
The theme of changing the Naruto world's history is also quite common. Since Hashirama was a founding figure of the village, fem Naruko's presence in his time could lead to different decisions being made. This could range from how the village is initially structured to relationships between different clans. And of course, there's often a theme of adventure as they face various challenges together in these new or altered circumstances.
One frequent theme is the exploration of different genders in the Naruto universe. Since it's naruko and fem haku, it delves into how femininity is portrayed. Also, the theme of loyalty often pops up. They are loyal to each other in the face of difficulties, whether it's from other ninjas or the challenges of their own pasts. For example, in some fanfictions, they have to defend each other against those who don't accept their friendship or new - found relationship. This loyalty is what binds them together and makes their story interesting.
Another theme is the idea of breaking boundaries. In the context of the Soul Society, there are rules and hierarchies. A fanfic might focus on how their relationship defies these, like Byakuya being from a noble family and Ichigo being a human - turned - Soul Reaper. It's about them crossing those lines for love.