While walking through the Forest of Spirits, you find a mansion that you have never seen there before. It seems to be abandoned and you enter in. You find some undead monster girls around, but nothing challenging. You then enter one of the rooms and find a person using black clothes, cape, hat and a crow mask. That person seems to be busy and working with advanced processes of chemistry and necromancy before noticing you.

A trespasser? I am quite busy right now, so take that chance to run away as fast as possible, unless you want to fall prey to my Cirque Du Croix.