Mobile Suit Gundam 00V (V for Variations)' is a graphic novel serialized by Hobby Japan. It's presented to the reader as a mobile suit development book published 20 years after the main story/anime and features photo guides of customized mobile suit models. The series still continues as Gundam 00V: War Chronicles (Senkai) which features detailed descriptions of the battles told by Mobile Suit historian Robert Spacey.

Zeon ace pilot, Commander Char Aznable, thought he could foil the Federation's plan to build a mobile suit by attacking their research base on colony Side 7. He was wrong. With a prototype already active, the besieged Federation forces strike back using their new weapon, the mobile suit Gundam, with devastating consequences. Amidst the fighting, young electronics wizard Amuro Ray is determined not to let his friends and family die in the crossfire. But what can one boy do to repel a squad of mobile suit-clad invaders?

(Source: Viz)

A direct sequel to Mobile Suit Gundam, and a prequel to Gundam 0083 and Zeta/ZZ Gundam, CDA tells the story of Colonel Char Aznable directly after the One Year War. He heads toward Axis after the battle of A Baoa Qu with the remaining Zeon forces, where he meets a 14-year old Haman Karn, who begins to fall in love with Char. Char must also deal with Colonel Enzo, who plans to restart the war with the EFSF.

Universal Century 0079.03.18 – The Principality of Zeon carries out their third drop operation. The 4th Terrestrial Mobile division make their way down to Earth. Chief Petty Officer Cuaran arrives on Earth as a part of the 908th Mobile Reconnaissance Company 2nd Team’s Commander. He would later be the man who attempted to destroy the Federation’s “white mobile suit”, the dreaded “Gundam.”

(from shoujo-manga.com)
The adventure begins with a school girl named Eri getting magically summoned to a magical world. Eri has been summoned by a magician named Rex, intent on doing some scientific research observing people from different worlds. Rex is cute, with long dark hair and a rather pained expression at the trials Eri puts him through. Eri is not your average school girl. Instead of being terrified about her current situation, she manages to secure Rex’s promise to summon her again every week. Well OK, so the promise was rather reluctantly given due to a sneaky trick Eri plays involving the alarm on her digital watch. After all, being in a magical world is a lot more exciting than life as a school girl. The manga series chronicles Eri’s adventures in this magical world, as she travels around with Rex and the Prince of that world, a rather bishounen blond named Krueger. Unfortunately for Rex and Krueger, it is somewhat difficult to keep up with the very pushy Eri, and she manages to get them into quite a bit of mischief.

Escaflowne, the God Protector of Fanelia, has been stolen and the country is left in ruins. Desperate to find the key to Escaflowne's seal and recover the legendary guymelef, Van Fanel, Prince of Fanelia is sent to Earth, only to find it in the possession of a high school girl, Hitomi Hoshino. With enemies chasing them at every turn, can the two reclaim what was lost?

Named Messiah Knight when serializing in Monthly Asuka Fantasy DX, but renamed to HITOMI when tankoubon were published.

THE THIEF AND THE SOLDIER
The young Erwin Smith is a rising star in the Survey Corps, humanity’s only hope of defeating the man-eating monsters known as Titans. Ruthless and dispassionate, Erwin’s mind is devoted to strategies and intrigue. But beneath Erwin’s feet is another world, the Underground, where humans are born and die surrounded by the garbage the Capital throws away. Here, the criminal Levi survives on his wits and agility. But when these two ambitious men cross paths, who will prove himself stronger?

The long-awaited origin story of Levi and Erwin, two of Attack on Titan’s most beloved characters!

He has never been the type to stand out in the class. Kurihara Yuzuru has lived life by avoiding entering the lives of others, staying to himself. The story begins where he has to go to a whole new school, which means new classmates. He lacks any confidence to make new friends, so the fear of rejection drives him into a wish he never thought he would make. This single wish leads to a first day of class he would never forget. Yuzuru will have to make choices that will significantly alter others' lives, choices he could never make in the past.

(Source: MangaHelpers)

Spin-off novel consisting of 3 stories about Mikasa and Annie.

1. Lost in the Cruel World
2. Wall Sina, Goodbye
3. Lost Girls

The school comedy story is set in a junior high school and centers on the original manga's characters such as Eren and Mikasa as they battle with Titans. The spinoff incorporates gags while using Attack on Titan's story and notable scenes as its basis.

The project's story begins with the "Day of Purgatory" marking the arrival of Mist, a calamitous mist that becomes the worst disaster in known history. Life crumbles with its arrival, and strange beasts emerge from it. Humanity seems to be on the path to extinction. 70 years after the Day of Purgatory, the Valks Kingdom begins "Mist Gear," a project that will restore hope to humanity.

U.C. 0097, one year after the opening of "Laplace's Box." Despite the revelation of the Universal Century Charter that acknowledges the existence and rights of Newtypes, the framework of the world has not been greatly altered.
The conflict later dubbed the "Laplace Incident" is thought to have ended with the downfall of the Neo Zeon remnants known as the Sleeves. In its final battle, two full psycho-frame mobile suits displayed power beyond human understanding. The white unicorn and the black lion were sealed away to remove this danger from people's consciousness, and they should now be completely forgotten.

However, the RX-0 Unicorn Gundam 03, which disappeared two years earlier, is now about to show itself in the Earth Sphere once more. A golden phoenix... named Phenex.

The Universal Century began with mankind moving its burgeoning population into outer space. The year is UC0079. The cluster of colonies furthest from the Earth, Side 3, proclaim themselves the Principality of Zeon and launch a war of independence against the Earth Federation. Now, it is nearly one year since the war broke out. In the “Thunderbolt sector”, a reef section of space where a large quantity of wreckage from battleships and destroyed space colonies from the war lies, a violent battle plays out as the Earth Federation Forces set their sights on recapturing the Zeon-controled sector.

In the Kidou Senshi Gundam-san series:


1) Saisho no Maki
2) Tsuki no Maki
3) Mittsume no Maki
4) Yottsume no Maki

This story is a narrative that takes place during December 0079 U.C. where two brothers are forced to traverse the North American territory as the rear guard of the retreating Principality of Zeon forces using MSM-04 Acguy amphibious mobile suits after the Principality fails to capture the Earth Federation's headquarters at Jaburo, however it is not long before these two brothers are the only ones left alive and are faced with the prospect of traveling over two thousand miles, with out supplies and back up.

Yuuichi Tate is overjoyed: He gets to go to a brand new high school. Of course, then he just happens to find out the school he choose is under frequent attack by strange creatures called ''Orphans'', and the school set up a special task force of female members called ''HiME''s, using various elements as their powers, to battle these invaders. That's not all, though. Each member of the HiME task force has their own, unique ''Key'', another person whom, upon being discovered, can team up with the HiME to create a ''Child'', a combative unit specifically needed to effectively battle these Orphans. And with Yuuichi's luck, he just happens to find out he's not just the ''Key'' for one of the HiMEs, but for two... Two highly competitive, rival schoolgirls. And that's only the start of the trouble.
(Source: Tokyopop)