Side-story novel to the Index/Railgun. Misaka Mikoto is invited to Russia to demonstrate the abilities of Level Five in a shopping mall. There she meets a girl named Lessar.

Summoning ceremonies can freely call forth even "those which lurk in the depths beyond the gods". One boy has top-level abilities even among the cutting-edge summoners who can use those ceremonies. He is Alice (with) Rabbit aka Shiroyama Kyousuke. But this strongest boy summoner has a single fatal weakness. Certain "cursed words" spoken by girls: "Help me." When Kyousuke hears those words from Meinokawa Higan, a girl brought to the verge of death, he throws himself into a city where three great summoner forces clash! (Source: Baka-Tsuki)

A spin-off of the various works of Kamachi Kazuma. One day, Kamijou Touma (A Certain Magical Index) faced yet another misfortune. His toilet was broken and spraying water everywhere. As he was lamenting his misfortune, suddenly he appeared in a strange place along with Index and Misaka. Soon enough, more strange people begin appearing... Includes: [Toaru Majutsu no Kinsho Mokuroku (Novel)](https://www.mangaupdates.com/series.html?id=31840) [Heavy Object (Novel)](https://www.mangaupdates.com/series.html?id=72061) [Interibirejji no Zashiki Warashi (Novel)](https://www.mangaupdates.com/series.html?id=80480) [Waltraute-san no Konkatsu Jijou (Novel)](https://www.mangaupdates.com/series.html?id=85860) [Kantan na Monitor desu (Novel)](https://www.mangaupdates.com/series.html?id=97029) [Kanta na Enquete desu (Novel)](https://www.mangaupdates.com/series.html?id=83949) [Killer Queen and Deep End (Novel)](https://www.mangaupdates.com/series.html?id=138835) [Mitou Shoukan://Blood-Sign (Novel)](https://www.mangaupdates.com/series.html?id=115675)

A high school student with millions of in-game earnings, Kaname Suou is one of the strongest Dealers in Money (Game) Master, a virtual world where nothing is against the rules. Assisted by his succubus AI partner, Tselika, he seeks the Overtrick-a set of powerful cheat-level weapons that break the laws of physics-and one young girl. What does it take to save somebody in a VR city with gunfights, car chases, and high-stakes stock market gambling? What exactly is in the cards for Kaname and his associates? (Source: Yen Press)

“If a zombie and vampire went all out, which one would win?” Those fateful words began a serious sisterly fight between zombie little sister Ayumi and vampire older sister Erika. The entire city has been recreated using the environment simulator created by the main character and a virtual horror movie begins with the fleeing residents as the targets!

Harland Defense is an old man. He holds the world’s only Risk Rarity Level 8 rating,and even that doesn't fully express the overwhelming power of this one-of-a-kind hitman. He takes on missions from governments and the most influential people in the world,receiving weapons from a girl known as “Mourning Dress” and executing each job precisely and perfectly. “I want to create a world without crime.” The greatest hitman had only one small weakness. That weakness was the peaceful, troubled girls with a story behind them who lived in the apartment building where Harland worked as the apartment Manager. A thrilling yet heartfelt story unfolds in the hitman’s life,filled with both secret missions and charming everyday moments with girls who have stories of their own. (Source: Manga Mirai) A completely new vertical-reading color comic by Kamaitachi Kazuma, the author of ‘A Certain Magical Index’ and ‘A Certain Scientific Railgun’!

Just before the completion of the Academy City space elevator "Endymion", the main characters Kamijou Touma and Index encounter a level 0 girl named Arisa. The Magicians are after Arisa, and they attack Academy City. A female leader named Shattoaura leads a unit from Academy City against the attack. Kamijou and Index learn from Stiyl that Arisa is key to a brewing war between the sides of Magic and Science. When science and magic cross paths, the story begins with Endymion as its stage!

Based on Nitro+CHiRAL's post-apocalyptic Japan BL game, Togainu no Chi.

Volume 1 (2021-09-30) 1. **Akuyaku Reijou ni Shitate Agerareta Watashi wa, Maou to Issho ni Slow Life wo Okuru Koto ni shimasu** (悪役令嬢に仕立て上げられた私は、魔王と一緒にスローライフを送ることにします) \[Nonon Nanashi x Celeste\] 2. **Ayashige na Kenkyuu wo shite Iru Mitai de Bukimi, to Iu Riyuu de Konyaku Haki to Tsuihou wo Iiwatasareta Renkinjutsu Shi no Watashi desu ga.** (怪しげな研究をしているみたいで不気味、という理由で婚約破棄と追放を言い渡された錬金術師の私ですが。) \[Shiraki x Koharu Michinoku\] 3. **Kizuita Tokiniha Dai Kenja no Musume ni Natte Ita** (気づいた時には大賢者の娘になっていた) \[Taishi Nekota x Reina Takayagi\] 4. **Shuudou Onna Endo wo Mukaeta Akuyaku Reijou wa Saikyou no Sentou Seijo to Natta** (修道女エンドを迎えた悪役令嬢は最強の戦闘聖女となった) \[Minoru Katsura x Zunda Edamame\] 5. **Ouhi Kyouiku wa Mojidouri Chihedo wo Haku Mono de shita node, Yorokonde Konyaku Haki wo Ukeiremashita** (王妃教育は文字通り血反吐を吐くものでしたので、喜んで婚約破棄を受け入れました) \[Hoshina x Tsuin Ringoame\] Volume 2 (2022-04-30) 1. **Iki Okure Reijou wa Ohitori-sama wo Mankitsu Shitai** (行き遅れ令嬢はおひとり様を満喫したい) \[Midori Azuma x Kurisu\] 2. **Kutsujoku Teki na Konyaku Haki wo saretara Daikirai na Osananajimi ga Kyuukon shite Kitakedo Omoidouri ni wa sasemasen!** (屈辱的な婚約破棄をされたら大嫌いな幼馴染が求婚してきたけど思い通りにはさせません! ) \[Shiraki x Ren Aoi\] 3. **Hitori Bocchi Reijou to Ippiki Ookami-san** (一人ぼっち令嬢と一匹狼さん) \[Midu Ukai\] 4. **Akuma to Reijou no Kimagure** (悪魔と令嬢の気まぐれ) \[Sari Aoi\] 5. **Shishou! Watashi, Konyaku Haki sareta Mitai desu!** (師匠! 私、婚約破棄されたみたいです! ) \[Sako x Ichi Kashiwa\] Volume 3 (2022-09-30) 1. **Amaku Nitsumeta Jam to Omoi to** (甘く煮詰めたジャムと想いと) \[Nimu Fuwai x Akihito Ono\] 2. **Kuishinbou Reijou to Imotare Kemonohito Koushaku** (食いしん坊令嬢と胃もたれ獣人侯爵) \[Risu Chairoi\] 3. **Musekininda to Iwarete mo Migaru na Uchi ni Nigedashimasu!** (無責任だと言われても身軽なうちに逃げ出します！) \[Shiraki x Shiba\] 4. **Konyaku Haki shita Hakushaku Reijou wa Shiawase na Houseki Kantei Shi ni Narimashita** (婚約破棄した伯爵令嬢は幸せな宝石鑑定士になりました) \[ARATA x Izumi\] Volume 4 (2023-03-31) 1. **Ane ni Ryakudatsu sarete Konyaku Haki saremashita ga, Shourai Yuubou na Kikoushi ni Kyuukon saremashita** (姉に略奪されて婚約破棄されましたが、将来有望な貴公子に求婚されました) \[Mobu Satou x Yuka Ogasawara\] 2. **Yoku Aru Konyaku Haki no Hanashi** (よくある婚約破棄の話) \[Inaru x Nagisa Shiono\] 3. **Koushaku Reijou nanoni, Souji Bakari shite Itara Konyaku Haki saremashita** (侯爵令嬢なのに、掃除ばかりしていたら婚約破棄されました) \[Hiro Kamijou x Riwa Misora\] 4. **Hakoiri Reijou no Kenshin to Henshin** (箱入り令嬢の献身と変身) \[Koma Toyama x Memeko\] 5. **"Okazari" na no wa, Anata no Kata desu** (「お飾り」なのは、あなたの方です) \[Machi Kanna x Yui Sakura\] Volume 5 (2023-09-28) 1. **Konyaku Haki Kyoudou Sensen** (婚約破棄共同戦線) \[Maturi Kazami x Akihito Ono\] 2. **Seireijutsu Shi wa Konyaku Haki sarete mo Shiawase wo Tsukamu** (精霊術士は婚約破棄されても幸せを掴む) \[Nagaredo Azeka x Tsushige Kanashi\] 3. **Doku ga Mieru node Hisoka ni Ouji wo Mamotte Itara, Ijikitanai Onnada to Konyaku Haki saremashita. Ato kara Soba ni Ite Hoshii to Iwarete mo, Mou Osoi desu.** (毒が見えるので密かに皇子を守っていたら、意地汚い女だと婚約破棄されました。後から側にいてほしいと言われても、もう遅いです。) \[Kotori Asatani x Mia Kazuki\] 4. **Hatsukoi Hazama: Ano Ato de** (初恋はざまぁのあとで) \[Deko Yamano x Sakura Shiba\] 5. **Konyaku Haki? "Yorokonde!" Guigimi ni Kotaetara Heika ni Nakitsuka Retakedo, Shirangana** (婚約破棄？「喜んで！」食い気味に答えたら陛下に泣きつかれたけど、知らんがな) \[Naka Tokai x Bayaan Mine\] 6. **Konyaku Haki Zenjitsu ni Modotte Kimashita** (婚約破棄前日に戻ってきました) \[ARATA x Roze\] Volume 6 (2024-01-31) 1. **Obake Reijou no Kekkon: Shiawase na Meiku, Koko ni Arimasu** (お化け令嬢の結婚～幸せなメイク、ここにあります～) \[Mana Imanami\] 2. **Konyaku Haki sarete, Sonomama Atarashii Fiancé to Kisei Jijitsu wo Tsukura sareru Tame ni Nankin saremashita.** (婚約破棄されて、そのまま新しい婚約者と既成事実を作らされる為に軟禁されました。) \[Sune Furukawa x Aki Naoe\] 3. **Medachita Kunai Akuyaku Reijou no Kareinaru Funtou: Kouryaku Taishou no Ou Otouto no Jimika wo Otetsudai shimasu!** (目立ちたくない悪役令嬢の華麗なる奮闘～攻略対象の王弟の地味化をお手伝いします！～) \[Hiroshi Ao\] 4. **Soredemo Ii, Anata to Tomoni Aru no Nara** (それでもいい、貴方と共にあるのなら) \[Mejirou Haruki x Nobara Bokujou\] 5. **Kakeochi Yotei to Iu Imouto no Odoshi de, Fiancé wo Koukan Shimashita. Kawari ni Norowa Rekoushaku-sama no Okazari no Tsuma ni Narimashita ga, Oshi no Osewagakari wa Kanzen ni go Houbi desu** (駆け落ち予定という妹の脅しで、婚約者を交換しました。代わりに呪われ公爵さまのお飾りの妻になりましたが、推しのお世話係は完全にご褒美です) \[Noko Minamino x Midori Ishikawa\] 6. **Suterareta "Kanpeki Reijou" wa Gureru Koto ni Itashimashita!** (捨てられた「完璧令嬢」はグレることに致しました！) \[Ootori x Aki Fukami\] Volume 7 (2024-07-31) 1. **Konyaku Haki sare Kokuou Goroshi no Tsumi wo Kiserare Sou ni Natta Watashi wo Sukutta no wa Oukyuu Ishidan no Seinen deshita** (婚約破棄され国王殺しの罪を着せられそうになった私を救ったのは王宮医師団の青年でした) \[Hiyori Tachibana x Kirin Ginno\] 2. **Shotaimen de Taihen Teinei ni Konyaku Haki wo Iiwata saremashita ga, Hanashiai no Kekka wo Tomodachi kara Hajimeru Koto ni narimashita.** (初対面で大変丁寧に婚約破棄を言い渡されましたが、話し合いの結果お友達から始めることになりました。) \[San Kazu x Hoshio Arata\] 3. **Konyaku Haki Nite Dorei Seikatsu kara Kaihou sareta node, Mou Anata no Mendou wa Mimasen yo?** (婚約破棄にて奴隷生活から解放されたので、もう貴方の面倒は見ませんよ？) \[Takano Mori x Kanon\] 4. **Imasara Modore to Iwarete mo, Minikui Kaeru no Tsuihou Seijo no Watashi ga Yatto Gen no Sugata ni nareta node, Mounidoto Modorimasen.** (今更戻れと言われても、醜いカエルの追放聖女の私がやっと元の姿になれたので、もう二度と戻りません。) \[Mai Haruno x Satoru Ao\] 5. **Wagamama Oujo no Konyaku ni Tsuite** (ワガママ王女の婚約について) \[Bunko Matsuura x Aki Shikimi\] Volume 8 (2025-02-28) 1. **Muteki no Shisukon Sankyou Dai wa, Danzai wo Chikarawaza de Kaihi suru.** (無敵のシスコン三兄弟は、断罪を力技で回避する。) \[Aoi Kashii x Kurumi Sakurano\] 2. **Jitsu wa Shiroi Kekkon deshita no. Moto Akuyaku Reijou wa Miboujin ni natta node Kondokoso Oshi wo Mimamoritai.** (実は白い結婚でしたの。元悪役令嬢は未亡人になったので今度こそ推しを見守りたい。) \[Rin Nonose x Sora Hisame\] 3. **"Otoko wo Aishite Shimatta" to Itte Konyaku Haki saremashita ga, Sore tte Dansou shita Watashi desu ka!?** (「男を愛してしまった」と言って婚約破棄されましたが、それって男装した私ですか！？) \[Mizuki Tachibana x Noel Tai\] 4. **Konyaku Haki sareta Otokomae Onna Kishi wo Watashi ( ※ Otoko) ga Kanpeki na Shukujo ni shite Miseru wa!** (婚約破棄された男前女騎士を私（※男）が完璧な淑女にしてみせるわ！) \[Shiramatsu x Maturi Kazami\] 5. **Konyaku Haki sareta Koushaku Reijou wa, Boshi no Hikari ni Michibikarete** (婚約破棄された公爵令嬢は、星の光に導かれて) \[Yoshinori Kisaragi x Yume Ayato\] Volume 9 (2025-09-30) 1. **Azato Sugiru to Konyaku Haki saremashita ga Keisan Douri desu** (あざとすぎると婚約破棄されましたが計算どおりです) \[Mimasaka x Kouki Fuyutsuki\] 2. **Kenkyuu ni Sennen Shitainode Okotowari Shitara Shiawase ni Natchaimashita** (研究に専念したいのでお断りしたら幸せになっちゃいました) \[Sari Aoi x Akihito Ono\] 3. **Konyaku Haki wo Moushikoma remashita ga, Sono Ohanashi Koso Haki sasete Itadakitaku!** (婚約破棄を申し込まれましたが、そのお話こそ破棄させていただきたく！) \[Ichino Tomizuki x Kanata Hoshi\] 4. **Fuguu na Aoi Tori ga Shiawase ni Naru Made** (不遇な青い鳥が幸せになるまで) \[Mai Haruno x Aminohada\] 5. **Watashi no Koto ka ゙Daikirai na Hasu ゙no Ouji Denka ga, Dekiai Koibito Atsukai wo shite Kureru.** (私のことが大嫌いなはずの王子殿下が、溺愛恋人扱いをしてくれる。) \[Kana Takano x Touko Amekawa\]

Kwenser came to the Alaskan military base to study Objects, the new weapons that have completely revolutionized war as we know it – battles are fought by soldiers controlling Objects far away from harm. However, when he starts to get close to Object pilot Milinda, will he discover the grim truth behind Heavy Objects?

The story of a hero who has fallen into the darkness, Kakine Teitoku is now revealed. Academy City gathers the best of science and technology and promotes development of esper abilities. Among them, Kakine Teitoku, the second-ranked of the seven Level 5 espers with incredible power, encounters a young girl named Yuzuriha Ringo. His objective is to obtain data on the first-ranked Accelerator's thought patterns from Ringo, a test subject in the Dark May Project. However, elements of the Dark Side of Academy City, such as DA, Kuroyoru Umidori, and the Kihara Family, are also targeting the girl's power?!

Toaru Majutsu no Index SP contains several short story arcs not covered from Index and Railgun's main stories, and adds more insights into the Toaru universe. The 4 stories focus on Stiyl Magnus, Mark Space, Kamijou Touma, and Uiharu Kazari respectively.