Angel with a Gun [Delilah x Rin Okumura]

Delilah was born in Heaven she never knew her mother her father was always busy but when she finds out that her mother is a demon everything goes to hell literally she must destroy her mother who killed her father finding the gate to Assiah she hears about true cross academy were she meets a demon boy with a past such as hers will she defeat her mother? will she fall in love? find out in ANGLE WITH A GUN