One is the original drama, the other a short epilogue to the drama.
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Both are different retellings of the same story.
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One is the original drama, the other is a short epilogue which gives a happy ending for the main couple.
One is the original drama, the other is a short epilogue giving a sweet ending and weddings for the couples.
One is the original drama, the other is some added scenes for the couple.
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One is the original drama, the other is a collection of missing scenes and a very cute epilogue to the series.
One is the original series, the other a bonus epilogue that concludes the story. While the original drama has a closed ending, the epilogue adds a bit more and has a sweet, happy ending as well.
The third season continues the story.
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The second season continues the story.
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One is the original drama and the other is a short spin-off that expands part of the story and has the same cast.
One is the original drama and the other is a special mini-series drama spin-off with the same characters. The mini drama is very cute and funny.
It's the fourth film in the series and continues the story.
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2
3
1
1
1