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jjokki could be from German "Jacke"

(afaik here are also many German loanwords in japanese, specially in engineering & medical fields)

ppang sounds like it came from french "pain"

mang-toh also french "manteau"

There are very few connections between Korea and Portugal, unlike Japan, where it is quite noticeable, especially in places like Nagasaki.

Close to Spanish:

Chaqueta/Pan/Manto(old fashioned -centuries- cloak/coat/cape)/Limón

wishatzu - shirt (from white shirt)

oranju jusu - orange juice