Dead Soul Revolver

When a person who under goes extreme depression/anxiety loses control, they will become a demon consumed by darkness. Luckily there are those devoted to hunting these demons. Kagami Kenichi was taking a shortcut home from school until he gets attacked by a demon. A girl named Miyu appears and fights off the demon with her gun. Kagami's normal life comes to an end as he ends up making a contract with Miyu by kissing her, causing his soul to become her source of power and her gun to get bigger and...