Mars Red is a work of art. It's a pity that so many people were unable to understand it and gave it such a low score. The most frequent criticisms levelled against this show are about consistency or plot holes. The problem is that these don't hold water if you were paying actual attention. I myself missed many details. This is a show that requires paying a lot of attention. Rewatches and reading discussions about it online helps a lot. The latter greatly increased my appreciation for the show. TL;DR This is a very good anime, but it's arguably too good to succeed in this age oftrash tier harems and brain-dead fan service.