Which narrative perspective is least commonly used?

The second person narrative perspective is the least commonly used in literature. This perspective directly addresses the reader as "you," making them an active participant in the story. It creates a unique, immersive experience, but also presents challenges because it can be difficult to maintain throughout a longer narrative. Authors typically reserve this perspective for specific contexts, such as instruction manuals, self-help books, or certain experimental forms of fiction. Consequently, while other perspectives like first person and third person are more frequently utilized in storytelling, the second person stands out for its rarity and specific applications in writing.