Naked Pit & Palutena Meet in a School for Goddessry and Angelry
An origin story where a naked Pit dated Palutena in college. His nakedness influenced her to be nude with him. Soon, his slightly older twin brother, Dark Pit, and Palutena's friends, Pandora, Viridi, and Phosphora, all ditched their clothes and had fun adventures on campus in their birthday suits. Expect retcons here and there. Inspired by this quote: "I should've gone to school for goddessry."
Naked Dark Pit & Pandora
This nudist couple has always enjoyed being fully nude in public, Dark Pit and Pandora enjoy streaking in the Underworld and everywhere else for the sake of calamity. In terms of canon, the events here started when the events of "Naked Pit & Palutena" first started. While Pit and Palutena are about being romantic, Pittoo and Pandora are more focused on looking like criminals. Also on AO3.
Palutena's latest act of mischief left Pit completely naked. Now Pit was engaged in all sorts of naked antics while embracing nudism. Eventually, Palutena also stopped wearing clothes altogether and they did everything they can in the nude as boyfriend and girlfriend, from committing public nudity to posing as naked art models and everything in between. Rated Explicit for nudity/sex. Also on AO3.