Totally random thought here, but why is it in Roman script and not kanji or (OK vague knowledge of Japanese script ends here)? I love colours and textures in this.
Thanks, Verilion. It's pretty common to see "romaji" on any/everything in Japan. Some of these do have only kanji on them, but I'm not sure if there's any rhyme or reason to it. Obviously, though, anything for export will generally employ romaji.