It’s interesting looking at Knights of Sidonia’s ending on context of the endings of Blame and Biomega, and the tones of those series overall. Blame and Biomega were stories with a generally small cast. Blame with one person, later 3 people. Biomega with 3 people. Those stories were also generally travelogues, with the protagonists traveling the Megastructure or the World (respectively) to find a solution. Knights of Sidonia on the other hand, has the story more (generally) locked down to a location, and has a much larger cast. So, the question becomes how does the ending pan out. There will be spoilers in this post.