It can be really overwhelming!

Even tho they don't share historic lineage, there are thankfully quite a few loan words. There's a whole set of characters (katakana) for foreign words, and most of those words are just the English word in a Japanese accent. So there's some reprieve.

But yeah, reading or watching native materials, there are so many very specific words in Spanish that I get to understand just for free. It kinda spoils a person.

German is another language I'm interested in (mainly because I perceive it to be pretty close to English), and even then I've heard the grammar can get tricky. And I know having gender the nouns will be confounding.