Sword Gai: The Animation: Now this anime as others have pointed out is the worst of all the anime Netflix has released this year, but in my view i think it tried to show what humans look like when they are angry, scared and greedy.
The story is not something out of the ordinary and it is simple to unterstand.
The MC is a emo/loner type who wants to be alone etc, but we later find out that the reason for this is the sword-the darkness that follows him everywhere he goes and it kinda makes you feel sorry about him.
I think that this anime would've been
better if it had 20 or 24 episodes since the characters didnt get the development and the story barely progressed through the series.
Overall: I think while the story and the characters are not that great the anime tried to show us how human are when they are cornered, depressed, obsessed, vengeful and weak. The meaning behind it is what it matters.