Honestly? I like Russian. I don't know why. I can't understand any of it, but it sounds cool.
I think it's the high number of fricatives (zh, v, sh, etc.). Still the only language I know of where "shch" is a single consonant.
Plus, decades of pop culture equating Russian-speakers with bad guys, which makes them inherently more interesting.
But it's a BITCH to learn beyond just basic grammar and vocab. The declensions and verb conjugations are on par with Latin in terms of difficulty. I still have nightmares of the verb tables in my high school Russian textbook. I was pretty good at basic Russian for a while, till it got seriously rusty.
Korean is not really a cousin of Chinese: it's a different family. Korean is more related to Japanese than it is to Chinese. It's grammar and honorifics are almost exactly the same.
Also, the words for river, lake and sea are all mixed up in Korean and Chinese.
Ho, Hae, and Ha, they were.
Korean = Alataic, Chinese = ...something else
Sino-Tibetan. But what happened is that centuries (millenia really) of close cultural contact and using the Chinese writing system meant a ton of loanwords, to the point where even if the grammar is still distinctly Korean, the vocabulary is heavily influenced by Chinese. (Sea in Mandarin is
hai, river is
ho, lake is
hu). So perhaps Dutch and German wasn't the best example. Maybe English and German?
Although English is even more mixed up because it has a mixture of Germanic and Romance grammar (SVO word order like Romance languages, adjectives before nouns like Germanic) AND a mixture of Germanic, Latinate and classical Greek vocabulary.