The Zero-Sum Original Anthology Series features themed oneshots from various mangaka that publish in Ichijinsha's Zero-Sum and Ward magazines. Volume 10 theme: Conflict and Secret Societies.1. Ranpo-sensei Laughs Like This by Takayama Shinobu2. Secret Mission by Saeki Yashiro3. Fang by Kawazoe Mariko & Nakamura Sachiko4. Black Swastika Army by Katagiri Ikumi5. Mushroom and Kappa - A Fierce Conflict of Honourable Men by Magami Guriko6. Boys’ Cavalry by Kayase Shiki7. Rindou by Asada Yasuka8. Hideout by Sekka9. Un Orso by Mizuhara Kenta10. Be Enthusiastic, Father! by Inui Miku11. A Promise by Seno Tatsune & Takamiya Aya12. Let’s Meet at the Secret Society by Kinoshita Sakura13. Will O' the Wisp by Kouzuki Leo14. The Village of the Secret Agreement by Ueda Shinshu15. At the End of an Endless Desire by Akai Higasa16. Demon King Time by Kanou Ruri17. Messenger of Justice ★ Moonlight Organisation by Usaki Hitomi
Volume 7 : Wizard and Magician1. Kawahori the Word Man by D. Kissan*2. Night bird by Kouzuki Reo3. Mushroom and Kappa - Magic Users’ Chapter by Magami Guriko*4. Good Day For Me by Omote Sora*5. Love Coloured Glasses by Bikke*6. The Kind Black Witch by Ueda Shinshuu7. The Magician and I by Mikawa Verno*8. Kokonoe Kyuujutsu by Aoto Takane*9. Forest’s Poison by Kumeta Natsuo10. The Witch and I by Saeki Yashiro*11. Kashoku by Kayase Shiki12. Magical Girl Alice and Her Brother by Igarashi Ran13. Magic! by Mizuhara Kenta*14. The Kind Magician and the Paper Bag Girl by MIZUTANI Yuzu & KAEDE Tohru15. Secret Service by Suzuki Ichiko* indicates oneshot being scanlated.
Volume 9 : Transformation and Personification*1. The Wolf and the 7 Baby Goats by Minekura Kazuya2. A Ramen Academy That Can Make a Line! (Temporary) by Kinoshita Sakura3. Mushroom and Kappa - Personification Chapter by Magami Guriko*4. Engi Maker by D. Kissan5. The Fox Cub’s First Love Transformation Technique! by Gunjou6. The Cat’s Turn by Saeki Yashiro*7. Little Heart by Ninagawa Tomo*8. A Nameless Quality by Tokitoh Kanade9. The Chosen One and Their Power by Mikawa Verno*10. "Thank Dogs Day" by Aoto Takane11. A Sprinkling of First Love by Akanatsu*12. Super Human Console by Shindo Arashi*13. Private Solar System Academy by Sakuramaro*14. My Blue Bicycle by Zekkyou*15. Tique-tique by Mitsu Nanae*16. The Raven and Pomegranate by Yoshizawa Tomoya17. Humanoid Début by Kana Sakana* indicates oneshot being scanlated.
Volume 11 : Time Travel & Time Travelers1. A Watch Seller Travels Through Time by Takayama Shinobu*2. The Classroom Where He Is by Kumeta Natsuo3. The Person from the Future is Next to You by Mikawa Verno4. Time Travel by Gunjou5. The Professor and the Strange Love and Hate by Saeki Yashiro6. Samurais by Kari Erika7. Mushroom and Kappa - Time Travel Chapter by Magami Guriko8. Memento Mori by Tokitoh Kanade9. Darkness Future Design by Yoneyama Setsuko10. You Can’t Travel Through Dimensions by Kinoshita Sakura*11. If Time... by Buchi Keiko12. Nankai Loop? by Serikawa Mame13. Future Tedium Efforts Record by Mitsu Nanae14. When I Came Home, There was a Samurai by Igarashi Ran15. After Long Long Years by Sakura Maro* indicates oneshot being scanlated.
Volume 5 : Japanese Style and Samurai*1. The Overnight Rain Stops by Minekura Kazuya (or "Last Night's Rain Lifts")2. Our Detective Story by Saeki Yashiro3. The Thunder God and the Wind God by Gunjou4. Samurai Soul by Asada Yasuka5. Takeda-sama, the Town Magistrate by Mazaki Haruka6. Tenmatsu, the Kabuki Actor with a Charming Figure by Ueda Shinshu7. Mushroom and Kappa - Arcana Compilation for Ninjas on Business Trips by Magami Guriko8. Confetti in the Fish Tank by Akanatsu9. Moonlight Sei-kun by Aoto Takane10. Urahara by Kouzuki Leo11. Pure Land Eye Story by Kayase Shiki*12. The Queen’s Dog by Araishi Ikkyou & Oshino Hikaru*13. Kakure Oni by Mikanagi Touya14. Absolute Obedience, The Peach's Rebellion by Yoshizawa Tomoya*15. Miokuribana by Kikuta Yui16. Swordplay by Shindou Arashi* indicates scanlation of oneshot.
Volume 4 : Vampire*1. Sleeping Vampire by Kinoshita Sakura*2. Mushroom and Kappa: Arcana compilation for vampires on business trips by Magami Guriko*3. Crossing the River by Kouga Yun*4. A Shower in the sunshine by Omote Sora5. Urban Vampire by Bikke*6. Sky Burial by Takayama Shinobu7. Today's Dining Table by Saeki Yashiro*8. The Aegis of the Coffin of Time by Yugyoji Tama*9. Forest of Nobility by Kayase Shiki*10. Chiyo-sama! by Shindo Arashi11. Strigoi Kingdom by Serikawa Mame*12. The Catharsis of Truth by Inui Miku13. Blood Donation Advice by Igarashi Ran14. The Novice Vampire by Amamiya Azusa*15. A Gentle Temperature by Kisaragi Yoshinori* indicates oneshot being scanlated.