i think he does, i don’t understand korean but there are many instances where Hajun recognises shihyeon as the young boy and he slowly starts connecting the dots
SPOILER!!!!!
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yes there was an incident where hajun got shot. and while he's being brought to the hospital, hajun suddenly remembers the face of his childhood friend that looks exactly like sihyeo .
the catch is all this time hajun thinks that his childhood friend was yunjae but all along it was sihyeon
hayun recognise him after he got shot (⌒▽⌒)
In the raws, does Hajun ever find out that Candy was his actual childhood friend instead of Yunjae? I feel so bad for both Candy and Hajun since there's so much miscommunication between them :(