Angelique Maren No Roku Kishi

Teresa had been living an everyday life with Renaud, who she considers her younger brother, until strange disappearances occurred across town. Teresa was abducted first, and while she came home uninjured, she had no recollection of the episode. Her family chooses to put it behind them, but Renaud soon vanishes, and unlike Teresa, he has been missing for days. Teresa came across a fortress while hunting for her brother. Renaud was entertained by the fantasy that he had become the leader of a band of knights. Teresa disguises herself as a squad member to discover what happened to her brother.