Kaguya is a character from the Japanese folktale "The Tale of the Bamboo Cutter," also known as "Kaguya-hime." She is a mysterious princess who is discovered as a tiny girl inside a bamboo stalk by a bamboo cutter. As she grows, her beauty attracts many suitors, including noblemen and the Emperor, but she sets impossible tasks for them. Ultimately, Kaguya reveals her true identity as a celestial being from the Moon. She must return to her home, leaving behind her earthly life and the suitors who loved her. The story explores themes of love, loss, and the transient nature of beauty.