Good idea in your game. Close to Turn-based game but you add your own feature in this game. Although your game contains more potentials, I still give you 5/5 in Theme and Originality, 3/5 on design. The reason is that I have played more than 60 games in these days, in originality, I never played similar game like yours. And the theme I can connect with the "Only One" without seeing your description. Maybe the design, you have to focus on more, I think if you add more animation would be enjoyable for all players. I think you may set each 2 seconds the enemy movement or do other things. While if you add the animations, players would not feel they are played one stop-time game.

This is a very clever concept! You also have nice n cute designs for the characters!

The controls need polishing to be able to functionally move around however, that's its biggest issue.