A medical genius traveled through ancient times through billing. The first time he met the male protagonist, he was forced to come back because of arrears before he could do anything. The second time he tried to save money and went back to wear it again. He found that the male protagonist had grown up and always wanted to have her. In order to be able to help him, she could only "save money" to renew the subscription by saving people. She fought queens and princes, made sisters and brothers, and played with ancient times while renewing.
Very pretty.