Returning to Korea after a study leave: what timeline should be confirmed before travel?

Kapy's editorial team reconstructed this discussion from a recurring Chinese or Vietnamese community need about returning after a study leave abroad. It is not a repost, does not represent a collected user, and contains no copied comments or personal data. If you have handled a similar case recently, please share only the official channel you checked, the year, the location, and the order of confirmation. Do not post passport details, account numbers, application IDs, addresses, or document images. A personal experience cannot predict another person's outcome, so readers should verify current requirements directly with the responsible institution before acting.