"Hikaru"? Is that the sound a Japanese guy makes when hiccuping? Or is it Japenglish? You know, like a buccaroo* is a cowboy, so some hick from the sticks is a "hikaroo." Of maybe it's a genre of poetry. Like haiku but oddly inelegant:
"Mad dog, raging so/ On sinking Osaka harbor/ Garbage scow"
* or maybe the male lead in a bukkake video?
Buckaroo Bonzai says "Howdy".