X-Day MangaKanojotachi no X-Day , Kanojo-tachi no X day, Tag XThe Last Supper,
It's senior year, and Rica is seriously stressed out. She's got more homework, exams, and papers than she can handle, and was recently dumped by her boyfriend. In other words: Life sucks! One day, she's chatting online when she meets three classmates who hate school as much as she does. Together, they hatch a plan to blow up the school when no one is present. The countdown is on for X-Day ... Featured in this manga is a side story called The Last Supper.