A Certain One-of-A-Kind Immortal

Family. That was the only thing that mattered to him. Once he lost that, revenge was all that mattered. To think a curse from a past foe would be the reason for his demise, and not his own lack of power. Unable to take vengeance for the death of his child, he swore to himself and the universe itself he would return. He was just never specific on how he would do that...