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.

This gag manga is the most popular series in Asahi Shogakusei newspaper and became a huge hit when adapted into the anime series “Nintama Rantarou” on NHK TV. The time is the Sengoku period, and the characters are ninjas-in-training who have entered Ninjutsu Gakuen. Their sights are set on becoming first-class ninjas, but they usually end up creating chaos. This series is perfect for treating students who are wearied from studying. (Source: Jmanga) *Note: Includes 6 extra chapters.*

It was summer in the 19th year of the Meiji era. The child demon Torasuke together with his partner Ushimatsu was collecting souls of humans whose lifespan had come to an end. Even though he's supposed to be invisible to humans, one day, a human named Souma approached him. Torasuke who has never been involved with people in this world was asked by Souma to exterminate a ghost...? A touching and mysterious Meiji-era tale of lives in the realm of the dead and the present world. (Source: Jardin Comics, translated)

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai. The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him. (Source: Baka-Tsuki)

Based on the popular Vocaloid series “Kokuhoku Yokou Renshuu (Confession Rehearsal):" Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

This manga contains six cute love stories from different authors. 1. **10 Kakan** (10日間, Ten Days) \[Miki Aihara\] Aiko is still in high school, but she has agreed to an arranged married with a 30 year old man called Shiwakara. Since they don't know each other at all, they decide to have a trial period: during 10 days they'll try to be a couple and then they will decide. 2. **Koi ni Riyuu Nantetsu** (恋に理由なんてッ, There is no Logic to Love ) \[Maki Usami\] Mayu hasn't been able to get over the boyfriend who dumped her. Then she meets Tsukiyama, a transfer student who seems interested in her... 3. **Happy Happy Letter** (ハッピィ　ハッピィ　レター, The Happy Happy Letter) \[Kamaro Kikuchi Reiko receives an anonymous love letter. To find out who wrote it, she asks for the Detective's Club's help, but she's shocked to see that among them is Yao, the boy she can't stand! 4. **Ouji-sama no Meshizukai** (王子様の召し使い), The Prince's Servant) \[Aiko Natsume\] Aoigiku is being forced to get married and, even worse, with her rich classmate Toujou. He agrees to forget the commitment only if she becomes his servant... 5. **Otona no Renai Kodomo no Jijou** (大人の恋愛・子供の事情, An Adult Love and a Child Affair) \[Shin Kawamaru\] Noriko is only in High School, but she ends up going to a single's party in place of her older sister. There she meets a great guy, but how can she tell him that she's only a teenager? 6. **Boku no Sweet Honey** (僕のスイートハニー, My Sweet Honey) \[Yukio Kanesada\] Nozomi likes the school's "Prince", Myoujin, but she can only afford to watch him from afar. So what will she do when he announces everyone that she's his girlfriend?

The story of a contract marriage set in an old-fashioned goldfish shop. The story begins when Asahi comes to Shichi, who has taken over his grandmother's goldfish shop, and asks him, "It may sound rude to say this the first time we meet, but will you marry me?" (Source: Natalie, translated)

Soft-hearted Takashi got caught up in a love game of the playboy, Kurose, all because he happened to see the love affair between those two boy at school! Kurose is such a dangerous guy, he even laid hands on the professor! The reason why Kurose cares about the unappealing Takashi is…!? A daring and touching serious love!

Takumi and Tomohiro are a very loving couple, 7 years and running! While Tomohiro is a not-so-popular illustrator, Takumi, however, is one of the elite. Because of this, they're only able to meet once weekly, and immediately after sex, Takumi leaves! Tomohiro can't help but wonder about this kind of relationship with Takumi, was Takumi forced into it by his selfish feelings or...is there more than meets the eye?

An unknown skill turns into unlimited power with divine knowledge \[Internet\]! *"To manifest an SSS rank with the weakest skill is a disgrace!"* Rona is a girl who was expelled from her home due to her lack of money, food, and power. Lost and hopeless, she suddenly hears the words... *"Would you like some guidance?"* She discovers how to utilize her unique SSS rank skill: \[Internet\], which she alone possesses. The true nature of this skill is the ability to access this world's 'guide sites' - an extraordinary cheat skill! Endless production of valuable items! Acquiring ultra-rare equipment! Thanks to her skill, she can do as she pleases...!

Toaru Kagaku no Railgun: Arts and Sciences City SS is a short story in Arts and Sciences City that takes place in the time period between September 3rd to 10th. Academy City has a exchange program with the rest of the world that allows some students to travel for this week to other places, and some students are allowed into Academy City during this time. Mikoto, Kuroko, Saten and Uiharu went to the Arts and Sciences City, made on a artificial island off the coast of California for a field trip. The Arts and Sciences City is known as a city that has cutting edge technology (in terms of the standards of the 'Outside' of Academy City - ie it is still far behind that of Academy City's), and is trying to take over Hollywood as the entertainment capital of the world. Stuntsmen and shows occur frequently at this city, and anything out of the ordinary is treated as another show. Due to the climate apart from sleeping everyone wears their swimsuits all the time. (Source: Toaru Majutsu no Index Wiki)

The 4-koma manga follows the adventures of the characters of the world of Toaru Majutsu no Index as they stumble into various situations. *Note: Includes 3 extra chapters.*