Vigenère Cipher

The Vigenère Cipher is a cipher used in Catastrophe Crow.

Alphabet
An online converter can be found here.

Forest Level
The table to the cipher is shown after a key is collected.

WHAT HAPPENED TO CROW 64?
Manfred Lorenz's suicide note has a series of digits written on the top. Inputting  into the cipher with different keys yield different results. They are as follows:


 * Nils → Nils I'm alive
 * Thea → Is not for you
 * Crow → For other kin