What was Attack on Titan’s 2006 one-shot?
In 2006, Isayama submitted a short version of Attack on Titan to Kodansha’s Magazine Grand Prix (MGP), the publisher’s open talent contest. It took the Fine Work award, the contest’s honourable-mention tier, and it is the earliest form of the story: Titans, walls, and a soldier with blades, compressed into a single self-contained short.
The one-shot is not chapter 1 in rough form. It is a separate, shorter telling, drawn in Isayama’s rawest published style, by a twenty-year-old who had not yet held a serialization. When the anime arrived, Kodansha brought it back: the prototype was included as a bonus with the first Blu-ray volume of the television series in 2013, which is how most readers have seen it. Series history usually starts in 2009; the object itself starts here.