This might be a bit weird, but when I listen to Japanese music, sometimes I notice "r"-like sounds in syllable-final positions, or between vowels where there should be no [r]. I know that /r/ is not ...
I've heard many people pronounce す, つ, く, and る as if く and る rhyme, す and つ rhyme, but not any other pair. It seems as if す is sometimes pronounced [sɨ] and く is pronounced [ku]. This doesn't seem to ...