Umi no Kishidan海の綺士団 ; 海之綺士團 ; Prudes compagnons de la mer

From Aerandria Scans: It’s the 16th century and the knights of the Mediterranean country Malta take pride in being the strongest in the world. Aciel is a beautiful lady-knight who gradually makes her way into the group of the knights, despite the fact it’s forbidden for women to be knights. Learn the tale of the magnificent knights whose charms neither friends nor foes can resist!