All memories and moments are cherish by Heejun. He was alone. Alone after someone he loves so much left him. After that,he hide in his lab. He hide from everyone. He hide from the world. He still wants to be loyal to the one he loves and that's why he didn't want to get out. Even after the death of the one he loves, Jeong Inseong, Heejun felt lonely than ever. He cried and cried. He's weak. He don't have any more strength. Until one day, feeling no use of crying, he decided to walk around the lab. He then saw the room that he never enter again after Inseong came into his life.

'ROBOTS ROOM'

He entered the room and saw the three human-like-robots that he created. Heejun smile to himself. The three robots will actually become his friends if Inseong didn't step in his life. He even gave the three robots, names and its Youjin, Seungjun and Jihun. "If only Inseong didn't came to my life, I already activated you guys and I wish I can activate you guys now but I'm too much a mess right now" He admitted that he IS a mess. Then, and idea came to his mind. An idea to make a robot. An idea to make a robot Inseong. Since that day, Heejun work hard on his work. Days and Nights he stay awake just to finish the robot. Of course he take breaks.

Months passed, robot Inseong is a great success. "Just need to insert memories" Heejun said and with that, Heejun insert Inseong's memories with a 'memories inserter' machine. "Please..Please Jeong Inseong..Please come back