I've been watching this Game's development and I really like it so far! It's a perfect adaptation of Juztplay's original concept. I love to see what this project turns into in just a few months!
I do however, offer some oddities and some recommendations for the next update:
Nari's Attack images (and only her attack images) have her missing her neck + she seems to enlarge a noticeable bit when she's in her attack animation, I know you're not the original artist of these images, but I still feel like I should point it out regardless.
Also, this isn't a big issue but: Maybe have it so that you can only press space to restart a match when it's over? Pressing space accidentally during a match is a small issue I have experienced.
On to recommendations: Add a Main Menu of sorts with three selectable options:
Start Button (Goes to The Character Selection)
How to Play / Rules Button (An area that explains the basic mechanics of how the Battles work 'N stuff like that, could be useful for any newcomers trying this & don't know about Juztplay's original)
Credits Button (Credits area for Juztplay + the Original owners of the OCs used in-game)
Also another small recommendation; maybe make the "Fight!" Text on the Character Selection last just a tiny bit longer? It seems a little quick to me.
That's all I have to say. Hope this helps!
(Edit: also I'm sorry that this is incredibly long)