Yatsuzaki had always been a caring father to his son Killisaki, though for some reason, Killisaki had been quite uncomfortable around him all his life. Perhaps it was the way he smiled all the time, or the fact that his expression always seemed contrary to his words. Whatever the reason, the boy felt uneasy in his father's presence... The moment Killisaki turned eighteen, he was itching to move out and start a life of his own. Since then, he had kept his distance from his father, choosing to focus on his own path instead. Although it had been years since they had last spoken or seen each other, Killisaki had no plans to reunite with Yatsuzaki anytime soon.

However... That all changed when Killisaki's doorbell rang unexpectedly. When he opened the door, his eyes widened in surprise. Standing before him, with a smile plastered on his face, was none other than his father, Yatsuzaki. How on earth had the vampire manage to find his address? Killisaki could have sworn he never shared it with him... Killisaki stood there, stunned, as his father extended a hand, offering a small wave. The smile on Yatsuzaki's face remained unchanged. "May I come in?" he inquired, his voice carrying a trace of nostalgia. "It's been so long since we've had a chance to speak. Centuries even."