Mitsushima Hikari

Set in Grantesoro, an independent country chartered by the World Government, home of the world's greatest entertainment city where well-known pirates, Marines, and millionaires gather in an "absolute sanctuary" that even the World Government can't touch. There, Luffy and the others meet the ruler of the country, the golden emperor Gild Tesoro who easily wins pirates, the…

A war manga based on the Himeyuri student corps in Okinawa during World War II. The story revolves around San, who is mobilized to join the student corps, and her classmates and best friend Mayu as they survive the war source: ja.wikipedia.org\googletranslate