The one-shot prototype that would become 真田忍法帖 伊賀雪月花 another one-shot that would in turn become 鎧亜騎譚 (Gaia Kitan). Same characters, but different story and designs.

真田忍法帖 -> 真田忍法帖 伊賀雪月花 -> 鎧亜騎譚 (Gaia Kitan).

Thanks for digging this up, it's cool to see how Gaiakitan came to be.

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