Yo I just thought of the plot of my manga's story.
A girl name Lia comes from the Dark world. The world where people who feel life is pathetic and all those go, and there's one advantage of living there, U get a pair of fine black wings, therefore people who live there are called dark angels.
Lia died after being constantly abused by her mother in the real human world. She is adopted by the Mitsune family, becoming their eldest daughter and the sister of Hikari Mitsune. She has to become a dark usher, going to the real world and killing people who feel pathetic and sending them to the dark world. The mitsune family, including her sister Hikari had managed to become a formal Dark Usher. But because of her kind character, Lia is not able to be a formal usher, instead she is still a trainee usher.
One day, she receive a emergency report of a boy named Kentaro attempting to commit suicide. To prevent him from going to hell or heaven, she has to hurry act without her senior who was happen to be having a break. But because of her inexperience, she lost her memory on the way to the human world and the only thing she remember was 'I came because of Kentaro'
