I'm not sure of an exact match, but you could look for other fanfics that involve unique characters in the world of the White Walkers. Maybe search for ones with a main character who has an unusual role within the White Walker lore.
Some fanfics about the White Walkers that explore different perspectives, like those from a character who is an outcast among them, could be similar. You can also check out fanfics recommended by other fans of 'harry the white walker fanfic' on relevant forums or social media groups dedicated to the show or the fanfic genre.
I'm not sure about a specific 'naruto white walker fanfic' off the top of my head. You could try searching on fanfiction websites like FanFiction.net or Archive of Our Own. They usually have a wide variety of fan - made stories.
One similar fanfic could be 'Harry and the Dark Forces' which also delves into the darker aspects of the wizarding world and Harry's possible involvement with them. Another might be 'The Dark Harry Chronicles' which explores a more menacing version of Harry.
There's also a fanfic called 'Jack, the Sailor Boy' which might be similar in terms of the nautical theme and the character's journey as a sailor. It has a lot of action and adventure on the high seas.
One interesting aspect could be the unique character of Harry within the context of the White Walkers. Maybe he has some special abilities or a different perspective compared to the typical White Walkers we see in the original series.
There's 'Harry and the Elemental Bonds' which also focuses on Harry's connection with different elements. It has a lot of action and adventure as Harry explores how to use the elements for the greater good.
I'm not aware of any exact fanfics similar to that one. But you could try looking for fanfics that focus on humorous or unusual takes on the Harry Potter world. Maybe search for fanfics where characters have strange magical mishaps.
One similar fanfic could be 'Harry and the Enchanted Thorns' which also has elements of a unique magical object (the thorns) that Harry gets involved with. Another could be 'The Dark Lily in Harry's World' where there is a similar concept of a dark - themed flower being central to the story.
There's 'Midnight Memories Fanfic' which also has a great story set in a world inspired by Harry Styles' music. Another one could be 'Fine Line Fanfiction' which like 'church by harry styles fanfic' might explore deep emotions. And 'Watermelon Sugar Fanfic' is also quite similar in terms of capturing the essence of Harry Styles' charm and incorporating it into a fictional narrative.
I'm not sure specifically about ones similar to that. But you could try searching on fanfic platforms using related tags like 'Harry' and 'character development' or 'influence on character'. There might be other fanfics that deal with how a character is shaped or influenced in a similar way.
You might like 'The Mysterious Girl in the Wizarding World'. This fanfic also features a girl character who is quite special. She has her own secrets and powers, and her presence in the wizarding world causes a stir, just like what might be expected in 'the perfect girl harry potter fanfic'.