Ryuu to Hana: Yowamushi-hime ni Kouri Ken no Chuusei

Princess Eleanor is appointed as the Commander-in-Chief of the prestigious Holy Dragon Knight Order. However, because she assumes the position without any notable achievements, she is met with criticism from those around her. As most of the many knight members withdraw from the order, Adolphus, known by the epithet [Ice Sword], steps forward to serve as her adjutant. He kneels before Eleanor and swears his loyalty—. Source: MU