The Zero-Sum Original Anthology Series features themed oneshots from various mangaka that publish in Ichijinsha's Zero-Sum and Ward magazines. Volume 12 theme: Demons.

1. Demon’s Kiss by Inui Miku
2. We’re the First Year Demons! by Kari Erika
3. The Demon Breaks the Flag by Saeki Yashiro
4. Kimi to Boku to Sekai no Owari by Kayase Shiki
5. Contract Day by Mikawa Verno
6. Wednesday Swing by Sekka
7. Tower Hill’s Lonely Rose by Yukihiro Utako
8. Demon’s Job by Ninagawa Tomo
9. Mushroom and Kappa - Demon Chapter by Magami Guriko
10. Genuine by Sakura Maro
11. Devil Children by Usaki Hitomi
12. The Demon and the Angel by Asada Yasuka
13. Setting Sun by 石川虫 & JAM
14. Escape from Hell by Yoshizawa Tomoya
15. The Demon and the Captain by Igarashi Ran