It's somewhat fun, and the assassin/reaper girl is cool, but the other two characters don't feel as thought out. The jiggle animations are janky as fuck as well. Good start though!
I feel like the gameplay would be more fun if the combos felt more important. Currently it's just a bit grindy, so try to mix it up with some gameover mechanics and the feeling of having stakes in the game.
On the first girl I got the vibe that we're in a dungeon/rogue-like, like we're helping the girls recover from battle, and this could be a cool story-line.
Just some first impressions.