Innerlocitor (Mystery Files)
The name of the nanomachine and technology used to overwrite memories. Transplanting one's memories into another body is made possible by sending information directly to the brain's synapses. In March of 2188, Newmen, Inc. (the industry leader of innerlocitor tech at the time) and Shikishima joined forces to make leaps and bounds with this technology. Since then, there's been a rise of crimes in human trafficking and illegal cloning, thought to be attempts at reincarnating through technology.
It's unknown who injected the innerlocitors into the 15 students. Furthermore, more than 80% of innerlocitor processes are devoted to an unknown function. The D-Code uses a relatively minor portion within the remaining 20%.
80% of the innerlocitor memory is used to supply sensory data to their users. This ensures that whatever happens in the simulated reality feels real to them.