Three Korean Fairy Tales: Beloved Stories and Legends

The three stories were: The Magic Gem, The Tigers of the Kumgang Mountains, and The Deer and the Woodcutter.
I'd say this collection was 3.5, rounded up to a 4.
I'm not a fan of guns in fairy tales, to me it feels less magical and more modern, even though it looks like rifles/long guns could have been around in the mid to late 1400's.
The Magic Gem felt familiar, I've probably encountered a similar wish granting fish fairy tale and this is Korea's version, but it felt its own in the mentioning of the underwater kingdom.
The Tigers of the Kumgang Mountains was about a father – and then a son– with great marksmanship and some tricky tigers.
The Deer and the Woodcutter, was enjoyable, made me think of selkies and other mythological women that need a skin or dress to return to their home.