Usually, covers of The Diary of Anne Frank feature black and white photos of its author, Anne Frank. Or, you might see tasteful illustrations. You don't usually see photos like this!
In South Korea, these are the kind of covers you'll typically see for The Diary of Anne Frank (aka The Diary of a Young Girl).
As recently pointed out by Korean-born Twitter user Che_SYoung, a version of this book was apparently released in South Korea years ago by an unscrupulous publisher:
It looks like a Harlequin romance novel! For the past few years, the image of this cover has been floating around online (as I mentioned, it is supposedly real!), and it even pops up when you Google Image search The Diary of Anne Frank in Korean:
Sigh. Of course, folks in South Korea are puzzled by this cover as well.