Secret room! Mystery! Killing techniques!
Grudge! Retribution! The entanglement of good and evil!
Ghosts are not scary, but human hearts are often more so.
There are intrigues among living beings, and there are many thoughts.
On the contrary, the undead stay in the world just because of a little obsession.
Are the creatures in the world so evil that they have polluted the world?
Or is the world already full of evil, but instead misleads all living beings?
