[Boshusan]

Well introducing a "game show" is pretty logic given all the source footage from Ninninger where they the sentai team has to beat the monster of the week through stupid games, with sometimes board, dices and all. They could have skipped the "aliens" part and go full Jumanji though.

The most difficult thing to justify will be Starninger, he's a cow-boy/ninja/guitarist with a burger shaped transformation device. Unless the PR character is introduced as an alien contestant... Yeah you can tell any shit you want with aliens.