Another origin could be through some sort of genetic mutation. Naruto has always had unique chakra, being the host of the Nine - Tails. This mutation in his chakra might have awakened this ability to control crows. It could also be a side - effect of his continuous training and exposure to different types of chakra over the years, which has gradually unlocked this new power within him.
One possibility is that it could be related to some ancient clan's hidden jutsu that Naruto somehow discovers. Maybe it was lost for a long time and Naruto stumbles upon it during one of his adventures.
Well, it might add a new dimension to his combat skills. He could use crows for scouting, like sending them ahead to gather information about the enemy's location and movements. This would give him an edge in battles as he can plan his attacks better.
Well, in Naruto fanfiction, 'house of crows' could be many things. It could be a secret hideout where a group of shinobi with crow - related abilities or symbols gather. Maybe it's a family or a group that has some special connection to crows, like they use crow - themed jutsu or they have a prophecy related to crows. It really depends on the creativity of the fanfiction writer.
It could be a result of some ancient jutsu that was passed down but lost in the main Naruto story. Maybe it was a power given to him by a mysterious entity to help him in his journey.
Perhaps it's related to his connection with the Nine - Tailed Fox. In the original Naruto story, he has a strong bond with the Nine - Tailed Fox. In the fanfic, this bond could have evolved in a way that allows him to summon foxes. It could be a manifestation of the latent power within him that he finally manages to tap into and use to summon these fox - like creatures.
The significance of the 'house of crows' in Naruto fanfiction might be related to the symbolism of crows. Crows are often seen as intelligent and mysterious in many cultures, so in the Naruto - based fanfiction, it could represent a group with such qualities.
Well, it could change the plot in many ways. For example, the crows might act as spies for Harry, giving him information about the Death Eaters' whereabouts. They could also help him find hidden objects or secret passages. Maybe they warn him of impending danger.
One possible origin could be some kind of ancient bloodline. Maybe Naruto has a hidden bloodline that was passed down through generations and finally awakened, allowing him to summon angels. Another option is that he got this ability through a special training or a quest. He might have found a hidden place or an old sage who taught him the art of summoning angels.
One possibility is that he inherits it through some sort of bloodline connection that was previously unknown. Maybe there's a distant relative who had the ability to control sand, and it somehow got passed down to Naruto.
One possibility could be some sort of new training he undergoes. Maybe he discovers a hidden jutsu scroll that teaches him how to control and produce fire from within his body. This could be a long - lost technique from an ancient ninja clan.
Well, in some fanfictions, Naruto's water - controlling ability could be a gift from a powerful sage. This sage, seeing Naruto's potential and his need for new powers to face upcoming threats, bestows upon him the ability to control water. Another origin could be that Naruto accidentally absorbs the chakra of a water - using enemy during a battle, and this chakra somehow melds with his own, giving him the power to control water.