Other name: 恶魔前男友, 悪魔な元カレ, Devil Ex-Boyfriend, Devil's Ex-Boyfriend, Devilish Ex-Boyfriend
Summary: Summary from Manga Abyss: Airi and Keina Kiryuu used to be a couple when they were in middle school. Because she had felt hurt and used by Keina, Airi decided to run away from the past and move on with another guy. Mutou was nice to her when she entered high school, however her past suddenly begins to return and haunt her. What will happen to these three people?