The Stargate War

Star Gate War is a manga written and drawn by Naoto Tushima and published within the issue 11 to 14 of the Super Robot Magazine in 2003. The timeline of the story is set after Aerialbots and Combaticons' joining.

It was put an end along with the cancellation of the Super Robot Magazine.

Synopsis
Near the end of the 20th centry, the Transformers form an alliance with the humans. They start to develop an large transportation gate named "Trigger" as a symbol of amicability. However, the Decepticons have their eyes on on the gate, and so does somebody else.

Item of note

 * Starscream's ghost travels back to the past time just like he does in the Beast Wars episode "Possession".