Set between the first and second seasons of the anime.

2017 a.t.b. The "Black Rebellion", the large-scale revolt against Britannia caused by Zero, ends in failure in Area 11. However, the influence of the Black Rebellion as a sign of opposition against the increasingly powerful superpower was strong. In addition to the major powers opposing Britannia like the Chinese Federation and E.U., acts of anti-Britannia terrorism began to occur with greater frequncy in the countries under Britannia´s rule, and a new period of resistance arose.

At the same time, the Britannian homeland begins to nip the buds of resistance with its overwhelming military strength. Within its forces, there is an anti-terrorist unit formed by Princess Marrybell mel Britannia, the "Glinda Knights". Deploying ace pilots and a great number of experimental Knightmare Frames on the Caerleon-class floating airship "Grandberry", the Glinda Knights are given the search-and-destroy mission of suppressing the terrorism that occurs in all parts of the world.

In the midst of such a chaotic situation, a boy and girl with the same face and the same name "Oz" encounter each other by chance in a small country in the Middle East.

Note: The manga story occurs alongside the Code Geass - Soubou no Oz SIDE: Orpheus photo story that is published in Hobby Japan magazine.

The setting is a planet named Slars, where the indigenous Slarsians and alien Earthians coexist uneasily. Shinta descends from both races, and is thus shunned by either side, but becomes involved in the conflict around "Regalia" that holds a mysterious power.

From Go Manga:

A youthful romance for those who think they are unhappy.

A bachelor for the past 11 years, Higuchi Yuuki is a male teacher in an all-girls school. He keeps wondering how to bridge the gap between himself and his students when he’s suddenly confessed to by Ichikawa, one of his students!

Although Higuchi rejects her, Ichikawa does all she can to get her teacher to turn her way -- even if it means making him grope her and holding his hand in class! When Higuchi can’t understand why she’d like an unimpressive and inexperienced guy like him, she kisses him! Will Higuchi be able to handle the feelings of his beautiful student, especially when she’s not the only one to have fallen for him…!? A dramatic school love story unfolds!

The "240" in the series' title is pronounced "Nishio" as a reference to the writer's name. The manga celebrates the 15th anniversary of Nisio Isin's writing career, and it includes characters from Nisio Isin's works.

Has anyone ever made fun of your dream?
Magic is something everyone in this world desires. Dawn Hill, with absolutely no experience in magic, has been accepted to the best magic school in Wuzhou. The only problem is she's the "worst student" they've ever seen. Faced with ridicule, rejection, and contempt, can the stubborn little witch fight back?

Extremely wholesome onee x shota comedy manga by Shirano Akihiro.

From Intercross:

Origawa Industry Public High School is a school filled with rough men. There's only one girl in this high school packed with wolves. But this little sheep isn't an ordinary person!

Also includes the following short story:
Konna watashi ja nashi desu ka?!

Follow Anna's daily life with her bodyguards!

Yanagi's dad is a president of a large hotel, he himself is handsome and clever, always wins the favor among girls. Moreover, he's always on the top of class and champions in all sports meetings when he was in primary school. But after he met Kujou, a transfered student, he had never savored the taste of victory in any single match with this girl for ten years. "Let's bid for final victory, Kujou." There here comes the last game. Will Yanagi fall in love with Kujou while he hates his competitor but cares so much about this girl?

The story revolves around Objects - powerful, massive weapons that change the course of warfare - and Elite Object pilots. An odd Elite girl named Milinda meets Quenser, a student who aims to become a Object mechanic, with the soldier-in-training Heivia on a snowy battlefield.

A love comedy between a fujoshi and a fudanshi!! Natsume Makoto, a college student, started dating a person while hiding her love for yaoi. She eventually mustered the courage to come out of the closest, but it turned out her boyfriend, Sudou Kojirou, also loves yaoi. Moreover, he's the complete opposite of Makoto...

Their relationship is still developing, but their lives as otaku does not slow down. Also around them, unique "yaoi otaku" friends are gathering together...!?

Aoki Kaoru is a 26-year-old woman who has never had a boyfriend. Normally unattached and unmotivated in her own life, Kaoru decides to start up a nail salon as a side business in addition to her regular job as a medical dispatcher. Although having a severe aversion to physical touch, she is forced to confront that fear when she meets a man who can´t help but touch others.

"One boy upset over his soft, cute appearance. The other boy, because of that boy's pretty and cute appearance, deliberately provokes and fans his anger to reveal his own Masochistic traits. What will happen between them?"

Athena, goddess of wisdom, goes back to school to seek revenge!

Doumori Hiroto is a mysterious boy from a lineage of ancient spiritualist who have been guarding the pathway to the underworld for a thousand years.

But he was born with a defect caused by bloodline of magicians mixed into his ancestry.
He possessed both spirit and magic power instead of either, yet he was able to use neither.

For this reason, his grandpa took him to his friend, a chinese sage, to have Hiroto being taught the sage cultivation.
He quickly mastered the sage path and was said equal to a hundred years cultivator.
Somehow, thanks to his sage power he became able to wield his original spirit and magic power.
However, during an incident where he had to unleash his full power, the recoil of that power caused his existence to be erased from everyone's memory.

Kouno Akira, class president and otome game lover, has decided to never get involved in 3D love. One day she bumps into Sakurasaka Pure who tells her straight that she would be Akira's future "Amore". Not only that, Pure even transfers to her class, follows her around until Akira runs off, telling her she does not intent to get involved in 3D love. Pure doesn't give up and tries to fulfill the wish of the 24-years-old Akira, who told her to look after Akira's high-schooler self.

"More-than-friends but less-than-lovers", that type of sweet-and-sour youthful story starts here.

"I'm sure we'll get the target we're after."
Shotaro, a ruthless killer, code name "S".
But one day, the target is the leader of the "Waruiyogumi" gang's only daughter - Furukawa, 17 years old.
The moment he points the muzzle at her, he feels something he never felt before! Shotaro feels his heart grow...

A genius killer, now a young girl's bodyguard?
The heartful killer comedy begins.

Tougo Ushiwaka reunites with his childhood friend and first love Ren Ryuugasaki after about 10 years. However, Ushiwaka had been traumatized to discover that Ryuugasaki, who he had thought was a girl, is actually a guy with a fondness for cross-dressing.