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 Shinobu
2. Secret Mission by Saeki Yashiro
3. Fang by Kawazoe Mariko & Nakamura Sachiko
4. Black Swastika Army by Katagiri Ikumi
5. Mushroom and Kappa - A Fierce Conflict of Honourable Men by Magami Guriko
6. Boys’ Cavalry by Kayase Shiki
7. Rindou by Asada Yasuka
8. Hideout by Sekka
9. Un Orso by Mizuhara Kenta
10. Be Enthusiastic, Father! by Inui Miku
11. A Promise by Seno Tatsune & Takamiya Aya
12. Let’s Meet at the Secret Society by Kinoshita Sakura
13. Will O' the Wisp by Kouzuki Leo
14. The Village of the Secret Agreement by Ueda Shinshu
15. At the End of an Endless Desire by Akai Higasa
16. Demon King Time by Kanou Ruri
17. Messenger of Justice ★ Moonlight Organisation by Usaki Hitomi

1) 3つと3者の時間 - Time of Three Things & Three Persons
2) 眠れる森の嘘つき王子と偽文学少女 - The Liar Prince & Fake Literature Girl of the Forest That Can Sleep
3) 熱血ファンクラブ - Hot Blood Fan Club
4) あまりの器 - The Container of Not Much
5) 似せ者同士
6) 追え！謎先輩
7) 好きな人の、好きな人
8) 仰げば春
9) 学ランの先輩 - Gakuran no Senpai
10) 先輩はヴァンパイア
11) 綴じた花
12) 殺し屋 赤頭巾～先輩との正しいつきあい方～
13) 恋のミルクティー - Love's Milk Tea

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.

The anthology features works by mangaka from Ward and Comic Zero-Sum. A new volume is released every four months.Volume 1 : Butler 1*1. Spider's Nest by Minekura Kazuya2. Nice to Meet You, Young Lady by Kouga Yun*3. Holly Green and White Little Garden by Takayama Shinobu4. The Situation of Goshogawa Yuzuru's Magnificant Mansion Creation by Miyamoto Fukusuke5. Butler of Worry by Higashiyama Kazuko*6. Elevenses by Mikanagi Touya7. The Incident of the Butler's Birthday Project by Saeki Yashirou*8. Le Droit d'aimer by Haibara Yaku9. Young Lady's Butler by Yoneyama Setsuko10. The Melancholy of the Irritable Boy and Butler by Kikuta Yui*11. The Moon and the Visitor by Nanjou Tsugumi* indicates it being scanlated.

A train is split into three sections: Morning for the lowest-class passengers, Afternoon for the middle-class, and Evening for the upper-class. It is running through a country only just starting to use electricity for power, rather than their source of Rainbow Stone. With the country in a era of change, will something begin to derail? Join Toky Towy as he works and learns life lessons aboard the transcontinental locomotive, the Rainbow Stone Train.

The locomotive called the Rainbow Stone Train runs, not on electricity, but on the energy source called, "Rainbow Stone." Inside, the train is split; from the extremely high class Evening carriage, to the average Afternoon carriage, and finally, to the cheap, but cramped and noisy, Morning carriage.
Employed as a crew member of Morning, Toky Towy struggles daily by the side of his strict superior. While going through various encounters and farewells again and again, he...

The anthology features works by mangaka from "Ward" and "Comic Zero-Sum". A new volume is released every four months. VOLUME 1: SHITSUJI (BUTLER) 1. Spider's Nest ~ Minekura Kazuya 2. Nice to Meet You, Young Lady ~ Kouga Yun 3. Holly Green and White Little Garden ~ Takayama Shinobu 4. The Situation of Goshogawa Yuzuru's Magnificant Mansion Creation ~ Miyamoto Fukusuke 5. Butler of Worry ~ Higashiyama Kazuko 6. Elevenses ~ Mikanagi Touya 7. The Incident of the Butler's Birthday Project ~ Saeki Yashirou 8. Le Droit D' Aimer ~ Haibara Yaku 9. Young Lady's Butler ~ Yoneyama Setsuko 10. The Melancholy of the Irritable Boy and Butler ~ Kikuta Yui 11. The Moon and the Visitor ~ Nanjou Tsugumi VOLUME 2: REBEL AND PHANTOM THIEF 1. CANDY ~ Haibara Yaku 2. "...That Story." ~ Masaki Haruka 3. FLIES ~ Minekura Kazuya 4. Arabiana ~ Mizuhara Kenta 5. The Ancient History of the Three Thieves ~ Takayama Shinobu 6. The Adventure of Captain Arco Iris ~ Tsutsumi Shouko 7. SKYHIGH TENSION ~ Fujimura Ayumi 8. Mushroom and Kappa: Arcana compilation for thieves on business trips ~ Magami Guriko 9. The Lonely Mountain Robber ~ Tachibana Ayun 10. LANEKEEPER ~ Fujiwara Yuu 11. Moonlight Honey ~ Shindou Arashi 12. The Unlucky Pirate ~ Asada Yasuka 13. Strobo Rider ~ Kouzuki Reo 14. Moonlight Dance ~ Kouga Yun VOLUME 3: PRINCE AND PRINCESS 1. Prince of Stars ~ Minekura Kazuya 2. Mushroom and Kappa: Arcana compilation for princes on business trips ~ Magami Guriko 3. Flower King ~ Kouga Yun 4. Rose Princess Destiny ~ Kinoshita Sakura 5. The Window of Rain ~ Takayama Shinobu 6. My Knight is a Princess ~ Kosugi Mayu 7. The Beggar Princess ~ Ueda Shinshuu 8. The Dawn Outside Heaven ~ D. Kissan 9. Princess Academy ~ Mikawa Verno 10. PRINCESESS ~ Kari Erika 11. Our Majesty's Tactful Words ~ Kisaragi Yoshinori 12. Heart-Racing Engagement Meeting ~ Saeki Yashirou 13. Listen to the Song I Sing ~ Mizutani Yuzu VOLUME 4: VAMPIRE 1. The Vampire of the Sleeping Forest ~ Kinoshita Sakura 2. Mushroom and Kappa: Arcana compilation for vampires on business trips. ~ Magami Guriko 3. To Cross the River ~ Kouga Yun 4. A Shower in the Sunshine ~ Omote Sora 5. URBAN VAMPIRE ~ Bikke 6. Sky Burial ~ Takayama Shinobu 7. Today's Dining Table ~ Saeki Yashiro 8. The Aegis of Time's Coffin ~ Yugyoji Tama 9. Forest of Nobility ~ Kayase Shiki 10. CHIYOSAMA! ~ Shindo Arashi 11. Strigoi Kingdom ~ Serikawa Mame 12. The truth of Catharsis ~ Inui Miku 13. Blood Donation Advice ~ Igarashi Ran 14. The Novice Vampire ~ Amamiya Azusa 15. Gentle Temperature ~ Kisaragi Yoshinori VOLUME 5: JAPANESE STYLE / SAMURAI 1. Last Night's Rain Lifts ~ Minekura Kazuya 12. The Queen’s Dog ~ Araishi + Oshino 13. Kakure Oni ~ Mikanagi Touya 15. Miokuribana ~ Kikuta Yui VOLUME 6: SPECIAL FORCES / TEAMS 2. Monach Sacred ~ SENO Tatsune & TAKAMIYA Aya 7. Frightening Eccentric ~ Sakamaki Yukisato 15. Twins Pocky ~ Serikawa Mame 16. Pledge of the Ox ~ Kayase Shiki VOLUME 7: WIZARDS AND MAGICIANS 2. Night bird ~ Kouzuki Reo 3. Mushroom and Kappa - Magic Users’ Chapter ~ Magami Guriko 4. good day for me ~ Omote Sora 5. Love Coloured Glasses ~ Bikke 6. The Kind Black Witch ~ Ueda Shinshuu 7. The Magician and I ~ Mikawa Verno 8. Kokonoe Kyuujutsu ~ Aoto Takane 9. Forest’s Poison ~ Kumeta Natsuo 10. The Witch and I ~ Saeki Yashiro 11. Kashoku ~ Kayase Shiki 12. Magical Girl Alice and Her Brother ~ Igarashi Ran 13. Magic! ~ Mizuhara Kenta 14.The Kind Magician and the Paper Bag Girl ~ Mizutani & Kaede 15. Secret Service ~ Suzuki Ichiko VOLUME 8: SHITSUJI 2 (BUTLER) 5. Le Droit D'Aimer ~ Haibara Yaku [SS] VOLUME 9: TRANSFORMATION / PERSONIFICATION 1. The Wolf and the 7 Baby Goats ~ Minekura Kazuya 7. Little Heart ~ Ninagawa Tomo 8. A Nameless Quality ~ Tokito Kanade 12. Super Human Console ~ Shindo Arashi 13.Private Solar System Academy ~ Sakura Maro 14. My Blue Bicycle ~ Zekkyo 15. Tique-tique ~ Mitsu Nanae 16. The Crow and the Pomegranate ~ Yoshizawa Tomoya VOLUME 10: CONFLICTS / SECRET SOCIETIES 11. A Promise ~ Seno Tatsune & Takamiya Aya VOLUME 11: TIME TRAVEL & TIME TRAVELERS 1. A Watch Seller Travels Through Time ~ Takayama Shinobu 2. The Classroom Where He Is ~ Kumeta Natsuo 11. If Time... ~ Buchi Keiko VOLUME 12: DEVILS & DEMONS (Sequel) 1. Demon’s Kiss ~ Inui Miku 6. Wednesday Swing ~ Sekka Arcana 13: Several Men and Love (Sequel) Arcana 14: Ninjas (Sequel) Arcana 15: School Uniform (Sequel)

From CoyoMoose:

The world that was once supported by four evil Gods has fallen to a crisis. Using song and dance, it is up to the kashikans to bring back the Gods which fled from their confinement.

History isn't Tokidoki's strong subject. He's even forced to do make-up work at a high-tech history museum to bring up his failing grades. After losing an eye to a virtual reality monster in an Edo-period simulation, he finds himself unable to leave the game. Could it be real?