One possible reason could be Naruto's natural sense of justice. He can't stand to see a child in danger, and Koyuki being a child at that time, Naruto's heroic nature kicks in. He has always been the type to help those in need.
There could be a fanfic where Naruto has to save a cheerleader in his world, just like the concept from 'Heroes'. Maybe the cheerleader has some special power or is a key to preventing a great disaster in the Hidden Leaf Village. Naruto, with his never - give - up attitude, would surely rise to the occasion.
I recommend " Rebirth: The Treasure Girl Has Been Waiting for Me for 17 Years ". The male protagonist, Luo Yuntian, saved a girl in a diving competition. After an accidental death, he was reborn and returned to the past. He decided not to miss the person he loved the most. This novel was about the male protagonist who was reborn to save a girl who had jumped into the water and experienced it together with his girlfriend.
The recommended novel about a girl who transformed to save her sister was " The Black-bellied Prince and the Tyrannical Princess Consort." This novel told the story of the female protagonist receiving treatment from the prince in order to save her sister. In the end, she successfully cured her sister and won the prince's love.
Well, in most cases, Naruto might use his signature jutsu like the Rasengan. He could either deflect the fire ball with it or use his incredible speed to get to Ami before the fire ball hits her. Maybe he also uses his shadow clones to create a distraction for the attacker while he rescues Ami.
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.
Well, Naruto is known for his quick thinking. So perhaps he quickly assesses the situation and uses the surrounding environment to his advantage. For example, if there's a water source nearby, he could use his water jutsu skills (if he has them in that fanfiction) to counter the fireball and save Ami. Or he might even use his body as a shield if it comes down to it, relying on his Uzumaki durability.
There were a few novels where the female protagonist saved the girl that he could recommend. One of them was " Jiang Min ". This was a novel about mutual redemption and healing on campus. There was no inexplicable kabedon or overbearing CEO plot. The other book was " If the Rain Was a Tragedy ", which told the story of the male protagonist who had a heart disease. When he was young, he witnessed his parents die in a car accident. It was a huge blow to him, and he became quiet because of it. The female lead had leukemia, and they saved each other. In addition, novels such as " Lowly " and " Night Mist " also involved the plot of the female protagonist rescuing the girl.
Well, once there was a girl in a burning building. A brave firefighter rushed in and carried her out to safety. The firefighter didn't hesitate for a moment despite the dangerous situation. The girl was saved and she was very grateful to the firefighter.
I haven't read this specific 'bloodborne save the little girl fanfic' in detail. But generally, in a Bloodborne - related fanfic with this theme, it might involve the protagonist's journey to rescue the little girl within the dark and dangerous world of Bloodborne. Maybe the story focuses on the challenges and horrors the rescuer has to face, like battling grotesque monsters and dealing with the complex lore - based obstacles.