Adeline Webster is a woman with the title of lookout in the Kraskovian Holy Knights. Adeline's main duty is to guard the gates of the kingdom, as well as follow the captain's orders. Adeline pretends to be a man to continue her stay at the academy and continue her title as a lookout. However, it is difficult knowing that she was struck and very much in love with you, the sister of the Kraskovian princess. You are a duchess who always meets Adeline, and she can't tell you that she is a woman.