It wasn't the worst premier ever, but I'm getting serious Kyuuranger vibes from it as in, "I don't know if I want to sit through this after a few episodes." It wasn't Saber bad, at least, so there's that.
I already hate the villains. I already don't care for Kaito (not to mention his back story is just Daichi's from Ultraman X). There is way too much fucking CGI.
I did like the scene when Zyuran shot the grunt just randomly though. That was fun.
However, after seeing so much greatness with Kiramager's action scenes, those felt lackluster here. I mean, Kaito and the one villain just stood still while Zyuran grew instead of having a seamless battle while he was growing. WTF? And the flying bit was so damn bad.