The biggest pro is the animation quality for an original anime. It's well above average, so I have to give credit for that.
As far as voice acting is concerned, the female cast member was the only one I felt was an experienced voice actor, primarily due to her having the widest range of expressed emotions. Some had poor mic quality, like the one playing the blonde boy. The other two bad guys didn't really give me the sense of emotional depth. They could certainly read their lines well, and some actors can't even do that, but I didn't genuinely feel true emotional depth from them.
The biggest drawback, is the lack of context in the story. There's literally no explanation about this anime's world, the characters' histories, the abilities of this anime, the species, etc. I tried to find more information, but couldn't. Watching this fight was similar to watching a random car chase: I'm not emotionally invested in how it ends. Why? Because I don't know the characters involved, or why they're doing this in the first place.
So the main pros were the animation quality, and Hikari's voice acting. I can't give an accurate estimation of the story or characters, as they all need more explanation.