I don't know if something like this exists, but I'd be needing a lot from that system, so I think I should just learn to create my own from scratch.
Does anyone remember the game Naruto: Rise of a Ninja? In that game, you have to do a sort of a minigame when you use your special moves.
Minigames like "Press the buttons in the correct order " or "Dodge the attacks" so you can take less (or no) damage from the attack.
I'd like to replicate that for my super moves in my RPG, but I can't find any systems to meet my needs. I've found the Undertale system, but that only solves one part of my issue (thats why I just wanted to create one).