I have watched a Korean episode of Pokémon, and I remember reading "다음 호에 계속" at the end.
2015年12月13日
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Hi, I'm not sure if we're talking about the same "to be continued" but for example, if your local news program is over and the announcer says "coming up, The Simpsons", the most common phrase you'll hear in Korean is 이어서.
2015年12月13日
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TV show: "다음회에 계속" (to be continued in next episode)
Book/Comics: "다음호에 계속" (to be continued in next issue)