While CGI can be acceptable, even fine or good in some series depending on implementation - look at Gundam Unicorn - here it's awful. It's lazy. It's not even trying to hide its laziness. It's as if the animators are telling the audience "eh, whatever, you get the point." Previous seasons have obviously CGI skeletons. This season is far, far worse.
The story is surprisingly good. Pacing both within and between episodes felt good with only one or two hiccups. Rarely did anything feel forced, rarely (though there is a particularly egregious example) did anything feel unnecessarily drawn out.
The opening is probably my least favorite of Myth&Roid's work. Sound within the anime itself is fine, serviceable, but nothing really noteworthy beyond "the opening is significantly worse than previous work by the same artist."
Character interaction, worldbuilding, and plot are the strong points here, don't go looking for technical achievement.
