"...And then, the Black Beast appeared, right?"
"Exactly. The Black Beast was born from the Cauldron that was discovered in the same place as the Susano'o Unit. That place, too, was where they conducted the test experiment."
Shuuichirou Ayatsuki had made contact with the Boundary, and from the Boundary the Black Beast came. If it was only based on that fact, it was possible to say that his experiment had unleashed the Black Beast.
Celica hung her head. Her long hair weakly slipped from the nape of her neck to her chest. The hands on her knees clenched tightly.
"Is my father... still alive?"
"I do not know. It has only been a few days since we have learned the truth that his experiment was conducted in the same place where the Black Beast had appeared, as well as the same time. But if we could hear the details of the story from Shuuichirou Ayatsuki himself, we might be able to get hold of clues regarding the Black Beast."
Having spoken that far, Clavis sunk his frail body into the wheelchair. Fatigue ran across him as he exhaled a deep, long breath.
A vampire that could age and also become tired. Ragna got an interest to that unusual notion.
"...The Black Beast. It is a monster born from the Boundary... no, it is the Boundary itself. It is not something a man should associate with. Humanity is still immature. Although their immaturity was the reason for their curiosity, a contact with the Boundary must not happen."