Onkalo
# Onkalo

"Onkalo" is a maxi single released by the J-pop singer Eiko Shimamiya (ETB-0161). Released 21 June 2012, it is her first single after her retirement from I've Sound in April 2011. The single features two new songs; Onkalo and Unison.

## Track listing

* "Onkalo"
* "Unison"
* "Onkalo"（Instrumental version）
