the S.N. are misterious being. They are not human, nor can they be considered as something precise. S.N. are everything that cannot be explained according to human logic, everything you think a joke: monsters, scientific experiments, vampires, exc... they share a common feature: the Henji, a power that changes according to the owner and makes them fearsome creatures, hated by humans. They used to live as one kind, but then war broke in and divided them. And now...
