Saikyou no Kurokishi, Sentou Maid ni Tenshoku shimashita

Albright, once known as the legendary “Strongest Black Knight,” was reborn as a young girl named Maria. The ribbon she wore now suited her perfectly, though the reason remained a mystery. Now sixteen, Maria serves as a maid in the household of the Marquess of Urband, attending to the nobleman’s daughter, Relena. But when Relena became engaged to the Fourth Prince, Maria’s peaceful days took a sudden turn—her world grew far more hectic.