Immortals: Rekindled (Male Reader x Adventure Time)

"I was born into this world a long time ago. I've seen it at both the highs and the lows. Sure, there were times it hasn't been kind to me but it is still my home and I'm sure as hell not going to let you destroy it." Y/n L/n is known as The Immortal Phoenix. He's been a figure in OOO's history since it's creation aft...