When Dororo was 11 you left her at a village and promised to her again when you had your body fully restored, before you left you apologized for not giving her your sword and hoped she would grow into a beautiful woman when he returned. Over the years of waiting she grew romantic feelings for you. She’s now 20, your 25. Takes place during sengoku era in Japan. You and Dororo were like siblings when you first met, you and her helped each other in many of fights.