I am quite fond of that anime series actually, and is where i originally drew the idea of this story. However the only thing I am drawing from it is the idea of samurai steampunk, nothing as far as automatons with human brains or floating castles, the only EPIC portion of this story is the god machines, with the story I want to draw it to the ground battles and have that almost correct history. Whereas the anime was based off of akira kurosawa's very famous and well directed film seven samurai in which I am also a big fan of that film and the director.
Gomennasi my good
Daisuke -san I did not mean to imply that your concepts were derivative of
Samurai 7 I too am a longtime fan of Kurosawa's work (as well as a modest collector of select historical anime ) and I am intrigued by your project.
I admire your use of Nobunaga and the famous "One-Eyed Dragon" ! ( altho I am amused that poor Nobunaga has been
blamed for connected with some wild things, including some pretty crazy demonic stuff simply due to a few witty lines in one of his famous letters ).
Regarding your "god-machines" -
since historic Nippon has long made use of bamboo and other materials in laminated forms you might have a scientist such as Hiraga Gennai invent a new glue and apply it to form new high-strength light weight laminates instead of heavy steel. You might make use of a fictional breakthrough of his famous electrical experiments ( the Erekiteru ) to power the god machines; or you could add mystery and have them powered by archane arts of Onmyōdō under the Tsuchimikado clan.
btw - welcome to Brass Goggles
Dewa mata
your humble servant
prof marvel