Aoi Miyazaki

Kyuta, a boy living in Shibuya, and Kumatetsu, a lonesome beast from Jutengai, an imaginary world. One day, Kyuta forays into the imaginary world and, as he's looking for his way back, ...

On a massive luxury cruise ship while at sea, the loyal butler and a mysterious woman cross paths as they try to uncover a murder-mystery that occurs on the ship.