Last Order is a significant character in the Toaru Majutsu no Index series. She is the final template for the Sisters, a series of clones derived from the DNA of Mikoto Misaka. Serving as the command hub for the Misaka Network, Last Order plays a crucial role in regulating her sister clones. Notably, she is depicted as a child with a cheerful and curious personality, often seeking the company and protection of Accelerator, whom she has a close and complex relationship with. Her character adds depth to the storyline, highlighting themes of identity and humanity within the cloned Sisters.