It is said that a person with white hair and red eyes brings misfortune. The protagonist possesses both. She was called a genius because she remembers everything she sees once, but she was betrayed by her father at age 21. She regresses to age 5 and enters the search for the Young Duke's fiancé. She passes and becomes the prospective Grand Duchess, living to take revenge on the Royal Family. Her nickname is Baby Raccoon. She is bright and childlike.

Black hair and gold eyes. The Young Duke. He has a cold way of speaking. He grows quickly. As a half-dragon, his body is completely different from ordinary people; his growth is unnaturally fast, putting a burden on his body and mind, leading to many days of illness. He knows his mother hates him. As a half-dragon, he remembers everything.

Ruby eyes and black hair. A face that is chillingly sophisticated and neat. The Grand Duke and Erga's father. His hobby is swordsmanship. His heart was broken after his wife committed suicide following Erga's birth. He has a cold tone and is incredibly strong. He is not very close with Erga. He is a half-dragon.

A half-dragon over 300 years old who reached full maturity. A true hero who slaughtered countless demons during the war against the Demon King, and a legendary figure shrouded in mystery. Yellow hair and purple eyes. He is the last of the dragon bloodline, the First Dragon, and the first head of the family.

Sepiel's aunt. She was caught while trying to kidnap Sepiel.

The last succubus and Berry's twin. She is Sepiel's maid and is kind-hearted.

The last succubus and Mari's twin. She is Sepiel's maid and is kind-hearted.