I'm pretty sure it's meant to be something along the lines of "He hasn't changed at all since then." In Korean the word for kid/child/baby can be used to mean person, so "that kid" usually just means "that person", so he/she/they.
I'm pretty sure it's meant to be something along the lines of "He hasn't changed at all since then." In Korean the word for kid/child/baby can be used to mean person, so "that kid" usually just means "that pers... yeehaw
I HAVE BEEN WAITING FOR THIS ONE, TURN IT UP