I Don't Remember You, but we Can Still Get the Hell Out of Here Alive!

Bell wakes after falling to the depths of Hell with a small, chestnut-haired girl shaking him. He should know her, but... He doesn't know ANYthing, anymore. (Warning; Sex Scenes in Places! Open relationship tag removed because my first reviewer didn't understand why it was there, and I'd like to state that the review is false.)