Nanatose Miiku to Kyokou no Ou
七歳美郁と虚構の王
In 1999, following a terrorist attack that claimed 1999 lives, Hisato Konoe, who carries the memories of 99 individuals, receives a postcard from his sister. It warns that the second most powerful assassin in the world has been sent. To safeguard Nanatose Miiku, Hisato must call upon the strongest man in the world.