I kinda regret buying this, because the physical scan (uploaded by Painload ) is pretty neat. I wish I could make a high quality scan like this.
This tank version Sacred Feather is quite different than the serialized one on 2D Dream Magazine, it is said that this artist nearly re-draw all the chapters. There is another version which made on "Comic 2D Dream", a special issue that can be considered as the prototype of Comic Unreal.
The artist has changed his pseudonym to 雛森瑞羽/Hinamori Mizuha, however this tank already made his older name famous, at least more famous than this new one.
info on mugi: http://doujinshi.mugimugi.org/book/335888/