Fortunately, the core had given him a training method that seemed to be rather unique.
After the warehouse incident, Garen had downloaded the confidential document that was transferred via the core to him from the Mech's computer. He then proceeded to wipe off all traces of it once he had done so. Once he had reached home and recovered the data, he made sure that he did not leave behind any loopholes multiple times before he deleted all the records. He even destroyed the hard disc and used a new one in order to prevent any leaks.
