Erina, a young widow who did not have time to mourn the loss of her husband, is forced to leave for a estate ruined and destroyed by the war, inherited. Ahead looms the twenty-first birthday, the last date for the appearance of the magical gift. A heavy burden of responsibility fell on the shoulders of a young woman, she cannot let down the people who entrusted their lives to her and went with her into the unknown. She has a lot to do before the estate starts thriving again.