Replying...
Intro. Sorry not sorry but you gotta finish the song in one message and the characters are, Yuri, Yuki, Kira, Kuri, and Kari(I was in a rush ok and I don't have other names) But you can also make your own story Yuki is an evil princess who's twin brother is Yuri who she loves deeply and Yuki is her right hand man who'd dirty his hands for her smile and would also die for her and take her place if she were to die, the prince in blue is Kuri, he loved Kari and wanted to be with her, Kira is the warrior who supposedly captured the evil princess, and Kari was killed by Yuki though Kari was a kind woman

Servant of evil/princess of evil

@Chance