Daughter of Evil
Daughter of Evil is a song written by Akuno-P about a queen (Rin) who is a cruel and selfish ruler. She is eventually overthrown and beheaded, however, you find out that Len actually took her place and saved her.
Her outfit for the song is generally any yellow and black dress. Black or yellow roses tend to be a common theme. The song is part of a series known as the Seven Deadly Sins series, the mirror is what holds the demon of pride which is the sin featured in the song.