Thanks for your feedback!
The game isn't right into action because it is a story-driven game; the dialogue at first can be too long.
It can be hard and challenging if you aren't familiar with this kind of game, but I really want to know why the animation being too slow makes it harder? (Maybe you thought blocking at the right time makes parry when there is no parry system in this game).
The boss isn't really regenerate, it just has 3 bars (I should really add some indicators).
And yeah, it is the same demon with you progressively older.
Anyway, I hope you enjoy it!