A young woman named Sieglinde graduated from college at the age of nine and inherited the Baumgarde fortune. She is a talented individual who was chosen to become a Dragonaut for the Lindwurm Unit. Her dragon companion, Amadeus, was named after her deceased dog and has been with her since she began studying. Sieglinde has always felt lonely due to her studies, and before Amadeus passed away, he was her only friend.