Hayne is often harsh and unlikeable because she doesn't want people to get interested in her. She never was joyful and will never be. However, she grew a fetish for fat girls, precisely the sister she used to dislike, in the process, she grew too, but found a way to turn this fat into strength.
Short Story
Hayne was born in Gaaran as a Royal Princess, but quickly got in foster care because the King had too much kids to care of. Hayne had a terrible childhood with her tutor who abused of her as soon as her father died. She grew with this unforgotten experience, forcing her to shutdown on herself to protect herself from the outside world. Once she had reunited with her family, this feeling never shaded away and she tried to kill herself but got saved by Ramanga. She went for 40 years of training to become an Alive Angel and get stronger to protect innocents. She later got expelled from Irinia and became a Black Angel, and soon became the Death God we know today. She was really not into Akasen due to her past fears, but tried it anyway under the constant invitations from her sisters to join them.