I have watched some mecha anime and although I'm not a guru in this field, I've come across this plot of "humanity is under threat from some creatures" in anime so many times. Going into Sidonia no kishi, I had no expectations but the anime proved me wrong. Season 1 was pure gold. There is weight behind the series as your favourite character can die anytime soon. The drama among the humans was so good as equally as the action against the monsters. Like all series, there are flaws. For instance, the main character might come off as the generic shy guy but by a little into the series, he gains a 3 dimensional growth.
Season 1 was a good introduction to the series but Season 2 was just unacceptable. First of all, they exchanged the beautiful serious plot for a lighthearted harem like fan service. I'm not a fan of harem or fan service but that is not the reason alone why I did not like the second season. The first season was dark, mature, psychological and sad. As a result, the transition into this bright romance like harem sequel was just weird and executed wrongly. Imagine an alternate Attack on Titan season 2 turning from a seinen into an anime where Sasha, Mikasa and Historia are after Eren. Silly right after that beautiful and serious first season? In knights of Sidonia, the second season did not further the entire story anywhere. It became repetitive and dull. I just hope the 3rd season will be far better than what we have now.
