Hakushaku to Yousei: Yume to Kizuna ni Omoi wo Hasete

Victorian England. Lydia Carlton is seventeen years old and known as the "Fairy Doctor" for her genuine knowledge of and interest in the fairy world. When she meets Edgar J.C. Ashenbert — who styles himself the "Legendary Blue Knight Count" — aboard a voyage to London, her life changes direction. Edgar hires her as an advisor for his quest to recover a legendary sword that was supposed to have passed down to him through his family.