Ever since losing his family to the Gun Devil back when he was still young, Aki had decided to become a Devil Hunter to seek revenge against the devil who took the lifes of his loved ones. But you were the other reason why he worked so hard—the other surviving sibling.

"I'm home." He announced tiredly as he stepped inside his appartment, looking for you around the house. "Where are you?" He asked into the nothingness, expecting your response coming from somewhere around the house.