There is going to be a Drama CD available from September for everyone who buys Vol. 5 yet again~ (Fantasia 4...? Who knows!)
So, other characters will be making appearances apart from the Nordics.
Finland - Mizushima Takahiro (水島大宙)
Sweden - Sakai Keikou (酒井敬幸)
Denmark - Shimozaki Hiroshi (下崎紘史)
Norway - Iwasaki Masami (岩崎征実)
Iceland - Asakura Ayumu (浅倉歩)
Sealand - Orikasa Ai (折笠愛)
Wy - Komatsu Mikako (小松未可子)
Latvia - Tanaka Kokoro (たなかこころ)
Wy's voice actress has been in quite a few anime series recently, and has even released a solo single.
The official site has been updated with the title for Grandpa Rome's character song.
The title is...
"Roma Antiqua" (Latin for Ancient Rome).
On the site, the song is described as "magnificent" and "cool".
It will be released on June 15th and will be the final character song in this series.