
it's not clear to me, too. I'm not sure if that is even significant to the story but I want to understand it as well.
In the earlier chapters, it looked like Shihyeon and Hajun already met when they were kids? (the place where they watch the sunset)
but in the recent chapter, it also looks like Yunjae and Hajun were childhood and even high school buddies.
what I don't get is if Shihyeon and Hajun were childhood friends, how come they don't recognize each other. XD

Spoiler!!!!
They met each other when they were kids but Candy was going to move away. He wanted to give Hajun his blue jacket back so he chased after him. A car was backing up and didn’t see him. Hajun saved him and got hurt. As he was fading, he saw the blood on Candy’s sleeve and thought Candy got hurt but he was actually okay. Hajun’s memories got a little messed up so he mistakenly thought Yunjae was Candy since he too got a scar on his hand, and he was also moving away. Someone who actually knows Korean said that Candy’s real name is also Yunjae and that is why Hajun is convinced the blond haired guy is Candy. Hajun later realized who Candy really is. I loved it that he love Candy before he even find out.

you know what. in chapt 46 (I think) when Shiyeon was saying a spy should lie and feign ignorance. and Yunjae appeared and asked what they were doing when they were obviously kissing. IT MADE ME THINK What if Yunjae was a spy. maybe he pretended that didn't understand what he saw. but I don't know if it some sort of foreshadowing or what. or maybe I am just reading into it too much
I must've missed that part where they got their memories jumbled.
I can't differentiate kid Hajun from kid Sihyeon, so I understand nothing. Can someone brief it to me?