Couldn't find lot of information about this artist, only clue i have he from Japan somewhere and i don't even sure about it.
After many listens thru Phosphorescence i couldn't wait for more and was really excited after found out about new postcard of him on Twisted Tree Line, so i immediately pres order button and wait for arrive.
Now (few mouths later), i thinks is better to tell you about both release in one review. The reason of that is because i expect and wait from a postcard pretty much the same i heard from hes music before and i am fine with that.

Music is enigmatic and cosmic deep. It causes feeling in me, like if i furtively overhear something way fat from what we able to understand. It seems like it's altered mind state itself or a bridge to it.
It very rare case when I don't think i able to describe how this work sounding. The only way you can get it is listen by yourself.
There is one album, postcard-type ep, and compilation appearance and, accordingly from Koen's blog, he is in process of second album creating...
http://www.myspace.com/koendaigaku
phosphorescence http://www.u-cover.com/u-cover/template.php?data=release-front&ID=173
wind has risen http://www.twistedtreeline.co.uk/page3.html
heatdeathrecords comp http://heatdeathrecords.bandcamp.com/album/for-small-creatures-such-as-we