"All beautiful fighters will battle up till there's only one!"
Developed by BandaiNamco, on the Enza platform (apparently some kind of browser thingie to handle most of the data--a la Granblue?--and to share stuff by Twitter or Line), and expected by some sites to drop on 2019 (kind of an obvious prediction however).
We don't have a whole lot of information so far (apparently they're having an event on the 24th, at the MegaHobbyExpo thing), but let's see what we can figure out in the meantime!
The character page, besides showing the 18 Unlimited, shows us these three as Triangle, "a new threat approaching the Continent" (crazy prediction: most or all of these gals will wear white):
Plus the hero(ine?), a "mysterious cat who speaks human language":
There's also the PV page, that instead of having "promotion videos" as you'd expect, has "promotion voices", ASMR vids of a girl whispering the MegaHobbyExpo date and stuff.
And, there's also a campaign page, where you can see close-ups of the evil trio's armor break, can preregister for Android if you have a BandaiNamco id maybe, and by clicking to AB (armor break) Airi at the bottom of the page, initial rewards might increase when certain thresholds are reached?
More news as they develop!