It could be an original character created specifically for this fanfiction. Maybe she's a damsel in distress with a special power or a connection to Naruto's past that we don't know yet.
Well, in many fanfictions, Naruto might use his signature jutsus like the Rasengan. He could sense the danger the woman is in using his enhanced ninja senses and then quickly dash in to counter Rizevim's attack with his powerful moves, overpowering Rizevim and rescuing the woman.
Another scenario could be that the woman is a shinobi from a small clan, but she has been framed for a crime she didn't commit. Naruto, believing in her innocence, saves her from being captured by other shinobi. He then teams up with her to find the real culprit and clear her name. Along the way, they face many challenges together and Naruto's positive attitude helps the woman regain her confidence.
Maybe it's an ancient evil entity that has been awakened by the combined power of Naruto's chakra and Wonder Woman's divine energy. This entity sees them as a threat to its plan of ruling both universes and thus tries to eliminate Wonder Woman first, which is when Naruto steps in to save her.
I'm not sure who Gi is in this fanfiction as I haven't read it. But it could be an original character created by the author of the fanfiction, perhaps a villain who poses a threat to Tenten.
Well, Naruto could save a woman who is trapped in a collapsing building during an enemy attack. He could use his super strength and speed to get her out safely. Then, the woman might be so grateful that she offers to help Naruto in his future missions in some way, like providing him with valuable information about the enemies.
Shikamaru might be involved. He's very intelligent and could come up with a clever plan to outmaneuver the Akatsuki. His shadow - binding jutsu could also be used to immobilize some of the Akatsuki members.
The main characters are obviously Naruto, Hinata, and Sakura. Naruto is the one in danger from Sakura, and Hinata is the savior. Naruto is the main protagonist of the Naruto series, known for his determination and his goal to become Hokage. Hinata is a shy but strong - willed kunoichi who has a long - standing crush on Naruto. Sakura is Naruto's teammate, a skilled medical ninja with a complex personality.
One possible plot could be that Wonder Woman gets trapped in a dimension where her powers are nullified and Naruto, with his ninja skills and chakra, somehow enters that dimension. He uses his shadow clone jutsu to create distractions for the enemies while he figures out a way to restore Wonder Woman's powers. Then, they team up to fight the common foe that had trapped her in the first place.
She might be a foreign diplomat or someone important from another land. Riezem could be trying to use her as a bargaining chip or to start a war, and Naruto, being the protector of peace, steps in to save her. This would also add an interesting political aspect to the fanfiction as Naruto would have to deal with the diplomatic implications of his actions.
It's also possible that Hana is related to one of Naruto's friends. Maybe she's Kiba's sister or something. And because of her connection to Naruto's friend, Naruto feels responsible for her safety. So when she's in trouble, Naruto steps in to save her without hesitation.