As you may already know, fictional language is the type of language in which words are placed so as not to present their meaning literally, but in a subjunctive and connotative way.
Within figurative language, alliteration is a figure of speech that fits very well. This is because alliteration works with the sound of words, since it is placed in a text with the objective of forming repetitions of phonemes very similar between one word and another. This makes the words of the words look the same, forming a harmonious sound effect that allows the author to emphasize a term, providing more expressiveness to the text.