Yûki Takeuchi

In an unknown place and unknown time, a lone Samurai known only as Grave thirsts for the ultimate battle.

Oar and Miho, who live in a seaside town, go back and forth between each other's houses, and their parents are childhood friends. Oar, who was in...

Fifteen girls who went on an expedition to an uninhabited island are left behind because their ship sank. The girls' survival begins.