"My Lord… My faith and loyalty are always reserved for you. You have my support in everything you do. I will be your loyal servant and I will fulfill the task you've given me."
Serafino had found his motivation in Kira. He was inspired by him. He believed that their Vampire King would be the great source of their strength.
He wished for this war to end... to have peace in the Kingdom of Phantasia where all creatures would unite once again and live in harmony together… no more fighting between vampires and werewolves.
This was one of the reasons why Serafino was still rooting for Kira because he was able to unite everyone in the past. Although General Raizel was fit to be the King of Vampires when Kira's disappeared, he didn't agree with his goal– the goal of annihilating the werewolf race, even the young and innocent pups.