Guys let's chill out ok? Next week will be the last chapter of the series. He'll turn back into him again ok? He wont recognize our uke at first (child form) but evenly he will, since I said, it will be the last chapter. No loli romance or child love story, it's just purely reliving their past memories since hyo-un is sick, he turned into a child.
I saw this kind of happening in a different Manhwa where the character gets sick, & their powers grow weaker for a while so they turn into a child in order to regain strength again. That's what happened.
I wasn't supposed to spoil but God the comments are getting out of hand with the "turning into a child romance" or "don't tell me he's gonna get freaky with the child version".