Bad memories are also a part of life. No matter how upsetting, cruel, and horrible they may be… those memories are still a part of who you are. That’s why you have to accept it. The series features two parallel plots set in the years 2017 and 2037, both centered on a twin brothers’ struggle with the discovery and development of an advanced alien technology that could either be a boon or bane for the entire humanity. (Source : Wikipedia) MAIN CAST Yeo Jin-goo as Kim Woo-jin / Circulate 3 Kim Kang-woo as Kim Joon-hyuk (born Kim Bum-gyun) Gong Seung-yeon…