This anime really had a problem of having a great story and ideas but didnt have the time or budget to properly get it produced. Im very glad the series finaly got a proper ending.
Do yourself a favour though and get some real subs, crunchyroll/horrible were really bad at translating enough that as someone who dosnt speak japanese even I knew many of the words were not translated properly or even at all.
Definetly recomend watching just cut out the 4 filler episodes that came cause of production problems. I see this as a occurance thats only going to get worse as anime progresses.
This story started with a very good premise, but poor excecution. Fortunately, the final season really increase in quality and are thought provoking. Wish the quality was constant in all episodes, but still one of the best recent sci fi anime. Recommend watching