The art style is very cute! And the Gacha idea is nice, too. I will say, the girls charging bfore each attack, including the base one, gets tiring pretty quickly!
Glad to hear you like it, I've wanted to play with gacha mechanics outside mobile games to make each person playthrough slightly unique. About the power up animation, it's a quirk of the Yanfly battle engine I never fixed and pisses me too.