Episode nine of "Circle" answers a lot of questions about the chip technology's origins and it raises a few very dark ones about its current condition and Woo-jin's existence in 2037. In 2017, Beom-gyoon has been found only to be lost again as his memories are wiped by the bug and Dong-geon takes over Yong-woo's research on behalf of someone who has been running it in the shadows all along.
Joys do not last long in the world of "Circle" and the twins' reunion is a short-lived joy. We have known that Beom-gyoon (An Woo-yeon) lost his memories back in 2017, but his recognition of his captor gave me hope that the brothers would have time to bond before the bug wiped everything clean. It is sad to see the two constantly miss each other, but it makes for good drama. The technology which keeps them apart is truly horrible.