- Creator Backlash: Bok Geo-li, author of Bimyeong-eul Chajaseo (Looking for an Epitaph) didn't want his name associated with the movie credits and sued the production studio in court to have his name removed.
- Doing It for the Art: Jang Dong-gun spent some time studying Japanese in order to properly speak it phonetically since he speaks Korean only.
- Fake Nationality: Jang Dong-gun as Korean-born, but Japanese national Masayuki Sakamoto.
http://tvtropes.org/pmwiki/pmwiki.php/Trivia/TwoThousandAndNineLostMemories
FollowingTrivia / 2009: Lost Memories
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