雄 介 最 近 變 成 古 迦 後 有 一 種 仿 似 電 流 游 走 身 內 的 感 覺 ， 於 是 他 拜 託 櫻 子 和 樁 秀 一 研 究 是 什 麼 回 事 ， 櫻 子 在 解 讀 的 過 程 中 ， 發 現 一 些 令 其 非 常 驚 恐 的 字 句 。 同 時 ， 神 秘 美 女 竟 然 公 然 在 街 上 以 鎌 刀 斬 人 頭 … …