So... is Idol Fight Suchie-Pai 2 finished or not?
NO, it is not finished.
Why?
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
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Synopsis
Every hundred years, magical mahjong tiles called the "Legendary Pai" appear, each guarded by a monster.
A group of extraordinary women, including a bunny alien, a maid-dominatrix, a cyborg, a magical girl, and a transforming superhero, are drawn together by the lure of these tiles.
To fulfill their deepest desires, they must overcome the monstrous guardians and collect all ten Legendary Pai.
However, their journey will not only test their fighting abilities but also challenge their own inner demons as they compete with each other.