When going after the demon, I noticed that for some reason, the skill sword rain does not trigger in the first round. Actually, maybe no sword skill works. Also, maybe you can synchronize the skill levels of inherited skills with the normal versions? I imagine having a check when switching forms.
There is also a mismatch of the description of the healing of the potions and the actual healing. The Spiritual Border skill seems to change also its healing output randomly between 50% and 100%.