Asian languages tend to be tonal. So the meaning of a word changes based upon the tone, or musical note, of the word. I think in mandarin the word for mom can also mean donkey or something depending on the tone.
Most European languages are not tonal (including english) we can change the meaning of a word with the tone of pronunciation, but that is an exemption, not the rule
Japanese is not tonal, unlike Mandarin, Thai, Vietnamese, etc.
Tonal languages sound ugly to me unless the individual has a beautiful voice
Also keep in mind the jap you hear is probably typically uttered by people who are paid to have pretty voiceshttps://simple.wikipedia.org/wiki/Tone_language