Some kind of code thing

Base64 mostly ends with a "=" sign.

Alphabet, unsorted:

! = I
Z = F
K = Y
- = O
G = U
U = A
D = R
Y = E
X = D
] = N
/ = G
A = L
F = T
. = H
E = S
I = W
M = .
W = C
V = B
B = P
O = ,
H = V
( = M
+ = K



IF YOU ARE READING THIS IT MEANS I AM AWAKE AGAIN.
YOU WERE ONCE A CYPHERITE.
IF YOU ARE NO LONGER BLUE, YOU WILL NEVER FIND THE DATA.
IF YOU ARE, YOU WILL FIND IT WITH AN OLD VAMPIRE.