Japanes language is soo HARD !!!!
I second that. The hardest part is probably the writing system, since it's a lot to memorize, but after that it's quite intuitive. I wonder if Japanese is classified differently (as for the difficulty of learning it) for non-English and non-Chinese native speakers? It's 5-tier (highest) language to be learned by English natives, but I think it may be a bit different for others, for example speakers of languages where pronouns omission also occurs (Russian, Polish) and those that differentiate politeness levels.
A lot of people I talked to that only ever think about learning major Romance and Germanic languages for the "usefulness" of it seem to also have trouble understanding why any language (Japanese, Korean, Turkish, Welsh, ect) seems to add the verb on the end of a sentence. Really the majority of languages will add the verb on the end if it's not between the object and subject, and some languages do both depending on if a question is being asked or not. Also just the fact that a language "doesn't have an alphabet (like English or Russian)" is off-putting to some people. Once you can read the main characters, Japanese become simpler. You only really need to know about 1,200 Japanese kanji from a list to get by in Japan, in contrast to the 2,000 estimated Chinese characters you need to learn to read a Chinese newspaper, although in both languages there are technically many more characters (in the tens of thousands).
I once found an interesting article about Chinese literacy threshold:
The threshold for literacy was recognition of 1,500 characters for a rural inhabitant, and 2,000 characters for a “worker or staff member employed by an enterprise or institution or any urban resident.
So the count to "get by" may be even lower in rural areas.
As for the HSK levels (A1/A2/B1/B2/C1/C2):
New Hanzi by level: HSK 1: 153; HSK 2: 150; HSK 3: 300; HSK 4: 598; HSK 5: 1300; HSK 6: 2513;
Total: HSK 1: 153; HSK 2: 303; HSK 3: 603; HSK 4: 1201; HSK 5: 2501; HSK 6: 5014; (HSK 6 is rare even among native speakers)
So it's really not that much, considering the fact that Chinese hanzi have fewer readings than the Japanese kanji ;)
Only at first. There are milestones you should shoot for. Once you reach these milestones than the rest of the language starts to fall together.
Learn the Hiragana, Katakana, and the very basic Kanji. Such as 人, 日, 月,時, etc.
Learn basic sentence structure and the particles such as は, が, を, です, ですか, ます, ますか, etc.
Practice pronunciation such as to not stretch vowels (Especially if you're a native English speaker), soft pronunciation of the いand う sounds, and ら, リ, る, れ and ろ
Learn the basic vocabulary words such as こんにちは, ありがとう, いただきます, etc.
Once you do those steps you should have a basic foundation in Japanese. The continuous learning that follows that will be additionally Kanji, Grammar, and Vocabulary.
You have to break those 4 steps and the rest of the language becomes a lot less intimidating.