Devil!Akashi x Lonely!Shy!Reader

(Y/N) (L/N) was just a regular high school girl. She was shy and didn't have any friends nor family, but otherwise she was like everyone else. But her loneliness was getting to her. It was starting to eat her up from the inside... so she decided to do something the (h/c) haired girl only heard from other people and read from books. If she would make a deal with the devil, maybe she could have a friend and happier life? (Y/N) was going to risk it, but what happens when the devil she summoned starts to like her as well? More than a friend? And... what happens when her time is over?