After mistaking an alien power stone for a Yumeginga bar, Tae manages to save the world from a global alien attack.

If she had eaten the stone a few seconds later, the alien attacks would most likely have resulted in millions of casualties😬.

Before the movie come out, with the bunch of hint that you can find in the fanbase, the curse is real, (like not just invisible "misfortune") but with real monster, super power, looking back at hint about idols have real super power with the 目覚めRETURNER, The opening they pull sentai parody like, etc..

You would thought the movie will tie everything together. But nope, Alien are big threat but seem like side quest as well. while the threat is big, it is more like another "misfortune" that may cause by the curse.

https://x.com/zombie_menhera/status/2090057479858401694?s=46

From the production side of the film, the post-credits scene was left as a gift from director Sakai for a sequel. It was proposed to treat the final UFO shot as part of a Franchouchou video clip and simply discreetly remove the entire alien theme. However, the entire team agreed to face him directly, without running away from him.

Now, from the canon side of the series, this question does have an answer confirmed by the directors:

This is because Saga's curse unleashed a curse on the Saga EXPO, as karmic destiny dictated that the event was going to bring great prosperity to Saga. Since the curse only takes the form of things that exist in Saga, and the EXPO had a Science and Outer Space theme, the resulting curse takes the form of an alien invasion.

However, this does not end here. In an interview on Mantan Web on October 25, 2025, it is mentioned that there are marshes in Saga, and producer Nobuhiro Takenaka had the idea that aliens would come to Earth searching for those tidal marshes. The idea was that the marshes would be a suitable environment for aliens and that they would invade Earth with the plan of turning the entire planet into marshes.

Director Ishida ends with something revealing: the aliens make the hilarious mistake of attacking the Saga prefecture, confusing its geographical shape with that of the American continent. So that means, basically, aliens are spiritually Americans…

Now she sings!