Migawari Hakushaku no Bouken

Mireille grew up with her twin brother Fredrick, who was adopted by another family as children but stayed in touch through letters. After Fredrick confesses in a letter that he is in love with a man's partner, Mireille challenges him to act on his feelings. Two months later, a man named Richard arrives, claiming to represent Fredrick and declares he is there to take her. When she resists, he kidnaps her. Mireille discovers that Fredrick has fled with the crown prince's fiancée and is now expected to take his place as the former Count of Bernhardt. The story includes four additional chapters.