So I stumbled across this fan-made video while looking up vids of Casshern, and it is set to a song that is by the band Yamada Masashi is the vocalist for. Eh, overall I found the song uninspiring and a little bland, and his voice seems a little weak, but then again I wasn't quite paying attention to the song so much as the video. And also, I think that with his and Hikki's differing styles they will probably mix well.

Vid here: http://www.youtube.com/watch?v=igixXw_obm8&