If you loved 009-1: The End of the Beginning, try Uchu Sentai Kyuranger vs. Space Squad
A bridge between a film you've already seen and one most people haven't. Uchu Sentai Kyuranger vs. Space Squad has roughly 3.9× fewer votes than 009-1: The End of the Beginning — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

009-1: The End of the Beginning

Uchu Sentai Kyuranger vs. Space Squad
What they share
Both films are directed by Koichi Sakamoto, and they both carry the neon soaked, playful mood tags, and they sit in Action / Science Fiction territory. If that's the register that drew you to 009-1: The End of the Beginning, the second film will land in a comparable space — through a different lens.
What Uchu Sentai Kyuranger vs. Space Squad is
You're a cosmic warrior torn between allegiance and doubt when a stolen power ignites a galactic manhunt. But the universe's peacekeepers and a rebel aren't who they seem. The directors stage these familiar colors against a neon sky, leaving you to wonder which side will burn itself out first.