Beom-Soo opens a locked storage room in his house. He hadn't opened the room in a long time, but at Melanie's request, he had to find his necessities again.
He actually a genius in IT world way back then, when living in Britain. He started working with Melanie's adoptive parent to cover the cost of living at the university that he attended at the time. His parent died when he was young and he was taken care of by his uncle who was in Korea. As a prodigy, he got a scholarship to continue his studies in Britain. But just a scholarship not enough for him to living his life there. It was then that he met Melanie.
Last time he using his hacking skill is when he and Aera flew to Korea. He does what he knows to avoid being tracked and it turns out no one has been able to track them all this time. Until one fateful day, Melanie or he know her more as Anna, comes back to their lives.