Cornelia Leo is the buff knight at the center of the story called 今まで一度も女扱いされたことがない女騎士を女扱いする漫画... which translates, roughly, to "A Story About Treating a Female Knight who has Never Been Treated as a Woman, as a Woman" (whew!).

Larger pics, partial and full nude are at my Patreon: https://www.patreon.com/Kowaina