Analyzing Nostalgia in a Protagonist's Reflections

In an excerpt from a novel, the protagonist reflects on their childhood in a small town, describing the town as 'a place where the whispers of dreams mingled with the rustle of autumn leaves.' The author often emphasizes the warmth and nostalgia associated with the protagonist's family gatherings, painting a vivid picture of joy interwoven with hints of melancholy when friends would leave and seasons would change.

Which perspective does the author evoke through the protagonist's reminiscence?