NO, it is not finished.
We found unfinished core content:
Kamigami no inai hoshi de (Prequel)
Kyoukaisenjou no horizon: next box (Sequel)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Anime - Base
Release date: October 02, 2011
Anime - Prequel
Release date: April 01, 2012
Anime - Sequel
Release date: July 08, 2012
Humanity, forced to return to Earth after a failed space exodus, finds the planet largely uninhabitable except for Japan. To accommodate everyone, pocket dimensions are created, each re-enacting historical events based on the Testament.
However, these pocket dimensions eventually invade and conquer Japan, forcing the original Japanese inhabitants to live on a city-ship called Musashi. They are overseen by the Testament Union, which dictates the historical re-enactment.
As the year 1648 arrives, the Testament stops revealing future events, causing widespread unease and rumors of an impending apocalypse. A student named Toori Aoi sees this as an opportunity to reclaim Japan.
Toori, along with his classmates, plans to use the disruption in the historical timeline to fight back against the nations that now control their homeland, aiming to restore Japan's original inhabitants to their rightful place.