If Alucard was locked away in the deepest part of Tartarus, And Tartarus being a place in the Underworld, And since Naruto fell into a fissure during the Underworld civil war, So it's not out of the question that Naruto fell far enough to land in the prison holding Alucard. I'm guessing, But the wording implies that the fissure Naruto fell into was deep enough to allow a fall all the way to the deepest part of Tartarus where Alucard was imprisoned.
Part 2 please
Must make a part 2
If Alucard was locked away in the deepest part of Tartarus, And Tartarus being a place in the Underworld, And since Naruto fell into a fissure during the Underworld civil war, So it's not out of the question that Naruto fell far enough to land in the prison holding Alucard.
I'm guessing, But the wording implies that the fissure Naruto fell into was deep enough to allow a fall all the way to the deepest part of Tartarus where Alucard was imprisoned.