Muse of Heart fighting is like Sans from Undertale. Soul blasters, your past sins cause more damage to be done to you, your Heart grows heavy as the Muse commands the sins to manifest. or is this more Lord like?

It’s a bit dubious if that’d be more Mind or Heart- Given Heart is your True Self and Mind correlates how you present yourself and your Choices, you could say the bad stuff you do intimately relates to your self, or you could say it’s all about the Choices you took. A bit of food for thought there. No idea though.