I think they'll find a way or something cuz I think a dialogue hinted at it but I may be wrong, I think it was one of the angels that said it
hopefully they do coz if there’s any more angst i’m killing myself
Potential spoiler...
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Og kid seongha did eat food after he disappears (as shown in recent chapter) and the boss angel raised him until he's an adult (a burly one at that, kinda like woo yoel physically), then tells him the truth. I think adult seongha decided to go back to earth after that but ended up with the locked souls in the devils cage along with the others...
Anyway, after this mc seongha studies hard, like literally, and eats and prepares to go back to earth all the while spying on woo yoel who now has amnesia from the angel headquarters. (￣∇￣")
wait thirsting aside, if seong-ah is actually a human, he wouldn’t be able to leave the realm right now because he ate the food no?