One reason might be that moomin is really famous in Japan, because the original animation series was made there even though moomin itself is from finland
Can’t even say, there’s not a thing I can say lyrics: I don’t know what is okay, though you came, did not a thing as always Can’t even say, what a shame, lalalalalala There’s someone there, wait, a Knock, knock, knock, knock Who? Who? ‘Cuz I can’t drown out that sound within my head ‘Cuz I can’t drown out that sound within my head ‘Cuz I can’t drown out that sound within my head