After a spirit-summoning ritual failed, Emery gained a mysterious space called the “Sea of Imaginary Numbers” and was forced to play the role of the “Observer.” The “Round Table” he founded attracted seven extraordinary women, including a cold, severe female judge from the Orderly Communion, a mysterious black-market information boss, a young fortune-teller with the gift of prophecy, and an aristocratic widow hunted by the Morningstar Church. In the Iron and Steam Era, where steam and spirit railways intertwined, the apocalypse was approaching. Yet he discovered that the fates of these women had long been entangled with his own Observer’s Seal.