Adelaide Luna Tearmoon

Background
Adelaide was the Empress Consort of Tearmoon and Mia's mother. Adelaide was born the daughter of Marquis Cotillard and she was chosen by the previous empress, Patricia, to marry the current emperor, Matthias Luna Tearmoon.

She passed away some times before the series started.

Matthias Luna Tearmoon
Adelaide's husband who claimed that he fell in love with her at first sight. Matthias is romantically loyal to Adelaide, as he told Mia that it is physically impossible for him to have illegitimate children with other women. The emperor also told his daughter that if she and Adelaide are drowning at the same time, he would save Adelaide.

Mia Luna Tearmoon
Mia is Adelaide's only child and she passed down her dress to her.