The Tale of the Bamboo Cutter is one of Japan's oldest surviving narratives, dating back to the 10th century. It follows a bamboo cutter who discovers a tiny glowing princess inside a bamboo stalk. He and his wife raise her as their own, naming her Kaguya-hime. As she grows unnaturally fast into a woman of peerless beauty, suitors including nobles and the emperor himself compete for her hand, but she sets impossible tasks for them to prove their devotion. Eventually, she reveals her celestial origin and returns to the Moon against everyone's wishes, leaving behind a letter and elixir of immortality that the emperor orders burned on a mountain—explaining Mount Fuji's name and eternal smoke.
The story blends earthly emotions with supernatural elements, contrasting human attachment with cosmic inevitability. What fascinates me is how this Heian-period tale already contained themes we see in modern sci-fi—alien life, advanced technology (her moon robe erases memories), and interspecies relationships. The melancholic ending where Kaguya-hime forgets her earthly bonds upon returning to the Moon resonates deeply, much like the bittersweet endings in Studio Ghibli films like 'The Tale of the Princess Kaguya', which was directly inspired by this folktale.