Izaya Orihara - Kasou Kyoku

I just found this song today and I thought it was absolutely amazing, so I decided to make a really quick video for it ;u;

Someone in the comments pointed out that the actual singer is Limone-Sensei.
The image is not mine. I found it on google.

I believe the original song is by Miku
Might upload more songs that I find lying around by other nico nico singers

2016 edit It's been like 5 years and there's still no confirmation on whether this is actually Shamuon's private version of the song or if Limone-Sensei secretly sang this. /Or if it's someone entirely different/. Thanks to all who are still listening and commenting after 5 years of this video sitting here. Maybe one day we'll find the true singer.