I need help with finding the key of this song
 

Hi! I was wondering if anyone could help me figure out the key of "I Know I'm A Wolf" by Young Heretics. I've been learning the first parts of it by ear but that only got me so far. I want to figure out the key so I can play actual chords, and I've tried my best to get the key. It would be nice if someone helped me. This is all on a piano, by the way.
~Thank You

How about that?

https://www.ultimate-guitar.com/sear...Know+Im+A+Wolf

Em