Super Princess
すーぱー・プリンセス
Anna Tsuyusaki, a high-school fencer, is given a pendant by her parents, featuring a portrait of a medieval princess resembling her. After falling asleep, she dreams of the princess, Harriet, who begs to be freed from an arranged marriage. Anna, assuming it is a dream, agrees to swap bodies. Upon waking, she finds herself in a medieval castle.