The fake samurai from Game of Thrones

Marshall transmigrated into the body of a 14 year old thieving beggar from Flea Bottom in the great King's Landing, outside the city Tywin's army had arrived and the massacre in the city would begin!. But before he panicked, a samurai system arrived and asked him to recognize a lord and be his faithful Samurai and earn loyalty points. Marshall panicked and tried to find the best dressed person to become loyal to. When he looked closely he found a lost little girl with a black cat in her hand, she was well dressed so Marshall became her samurai. [linking Rhaenys Targaryen as her Daimyō! the system is activated, as a gift from a novice samurai you get the legendary Kusanagi +100 free attribute points +supreme mastery in Kenjutsu]