Poster - GinRei Special 2 - First Privilege

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PST-GinReiSP02.jpg
Science Ninja Team GinRei?

I believe this is a first privilege (pre-order) poster for the either the 2nd GinRei Special OVA or OST. My guess is that is a parody/homage to Gotchaman based on the fiery bird-mech in the background, it looks similar to the Gotchaman's GodPhoenix spaceship.