Need help with Korean hangul

Based on Trapster77's advice; for a few days now, I've been working on the Korean half of one of Dal-gi' pools about a creature disguised as a really creepy youngster (NSFW). There's two words i don't understand, though.

First is panel two on post #8790720. The bottom-right bubble has a character for "crab". I think it should be obvious what that means, but it escapes me.

Second is on the upper-right panel of post #8790722. The housesitter says "Johaet". No clue if that's a name or word.

P.S. I left the word nugu untranslated as foreshadowing. When i checked, it seems to be less generic than Onee-san.

FWIW you could've edited your original topic (topic #33525) with this information when you got that reply but oh well.

WRS said:

FWIW you could've edited your original topic (topic #33525) with this information when you got that reply but oh well.

... it was midnight, sorry. I didn't alter the speech bubbles too often, did i?

I was able to find that the hangul for crab is GE, but what is the context behind it?

For one of the artist's other pools, how accurate was i on post #8318581?