Nirvash RA272 is a sentient LFO (Light Finding Operation) mecha featured in the anime series 'Koukyoushihen Eureka Seven.' As the earliest known Nirvash model, it plays a central role in the story, often piloted by the protagonists Renton Thurston and Eureka. The Nirvash exhibits unique abilities and a mysterious bond with its pilots, acting almost as a character of its own. Its advanced technology and evolving consciousness are pivotal to the series’ exploration of human and Coralian interactions.