Zenkai can mean all the worlds.Kikai can mean Machine or Machine world. What if the story is about several different worlds in a universe, with worlds such as the human world, machine world, etc. Then, 5 people from the machine world come to protect all the worlds from an invasion by a group of aliens from another universe?

none of these "rumors" have any credence.

That would be zensekai to be exact though depending on if the wording is intentional it can be. The word zenkai commonly means open up or proceed depending on the kanji/Chinese characters being used. I will give you the benefit of the doubt since it has the possibility to also mean all realms cause considering the word Kikai in this case means Machine Realm. They could be rangers who get their powers from the Machine Realm/Kikai while the rangers themselves are from various realms with one of them being Earth.

Didn't Go-Onger already have a plot that centered on multiple worlds where both the Rangers' powers and their enemies came to Earth from the Machine World? Other worlds seem to be a pretty common element in Sentai, but this theory about Zenkaiger sounds reeeeally similar. Of course Sentai has never been shy about re-using ideas, but I doubt they'd copy the whole concept of a previous series, unless it was either a sequel or a radically different take on the concept.

Maybe Zenkaiger will be a dark and gritty series (at least by Sentai standards) set in a post-apocalyptic world... and then the Power Rangers adaptation will be light and goofy.

Random guess Kikai means Machine World so maybe it's Transformers based.

Zenkaiger listing?

Memory, huh? Much like the title, that sounds like a word that can easily do double duty for both robotics and storytelling. Might have gotten this one right on the head!

Mechanical... yokai? Huh. *scratches head* Ehh, why not, we have gemstones that turn into vehicles.

Where did you get this info? It’s suspicious that a person with only a couple posts would drop real info, but... after that guy who spilled the details on Kamen Rider Saber ended up being legit I’m willing to believe anything. :lol

That is a good question.