All humans in this world can use the power of the light of mana, and those who can't are considered to be subhuman 'Norma.' The world is like a peaceful utopia, and the celebrated princess Angelize leads a happy life. She believes that the only darkness left in the world is the existence of the horrible Norma. However, in a ceremony on her 16th birthday, the truth is revealed--Princess Angelize is a Norma. Now she is going to learn what her society does to Norma. She is sent to an isolated island full of others like her, who are taught that the only reason they are allowed to live is in order to fight to protect the peace of this world. Now "Ange" is part of a squad that pilots Paramails and fights invading extradimensional dragons. (Source: MangaHelpers)

A sequel to Mai Otome,which introduces Archduke Nagi's younger sister. Who is disguised as a man. Arashi (Nagi's sister) has bought Garderobe and all of its properties. The story starts from there.

One day while Shirou is delivering a secret device to his colleague, he meets Amane Mao, a super-strong girl capable of lifting cars. This device, the VITA system, is a new weapon theoretically capable of defeating ERRORs: a breed of enormous, cybernetic mutants that necessitated the use of weapons of mass destruction on Old Tokyo fourteen years ago. Suddenly, one such ERROR appears before the two and goes on a rampage. Shortly after a failed argument to convince his colleague to approve use of the VITA system simply to save civilians, his colleague is devoured by the ERROR. Faced with death, Shirou has no choice but to accede to Mao's request to activate the super-weapon and destroy the ERROR. ...and thus Shirou's eventful days as the male master of the VITA system at St. Liddel's Girls' Academy are about to begin... (Source: Edited from AnimeSigma)

My-Otome Zwei takes place one year after the events of My-Otome. Arika is now a full-fledged Otome (though still under the tutelage of Miss Maria as she has yet received enough credits to graduate) and Nagi is incarcerated in a prison somewhere in Aries. The various nations are at peace with one another and plan to hold S.O.L.T. (Strategic Otome Limitation Talks) to discuss limiting the numbers of Otome. A mission to destroy a meteor threatening to collide with Earl sets into motion a chain of events which result in a mysterious shadowy figure attacking Garderobe and several Otome as well as a new, more powerful version of Slave appearing across the planet. To make matters worse, Queen Mashiro disappears following an argument with Arika. The series follows Arika's search for Mashiro as well as Garderobe's attempts to uncover the truth behind the shadowy figure. Source: wikipedia

A 33-volume collection of award-winning oneshots put out by Kodansha from 2002-2012. Some of these would later get serialized or collected in other volumes. **Serialized or otherwise collected:** AKABOSHI Tomo [Shishunki Syndrome](https://www.mangaupdates.com/series.html?id=10895992058) AKIZUKI Risu [Oku-sama Shinkaron](https://www.mangaupdates.com/series.html?id=8585) ARAI Hideki [8-gatsu no Hikari](https://www.mangaupdates.com/series.html?id=48516) ARAMAKI Keiko [GENOMES](https://www.mangaupdates.com/series.html?id=100366) ASADA Torao [Spoonman 3.18](https://www.mangaupdates.com/series.html?id=7155) ASHINANO Hitoshi [Yokohama Kaidashi Kikou](https://www.mangaupdates.com/series.html?id=586) Endo Hiroki [Kitto Kawaii Onnanoko Dakara](https://www.mangaupdates.com/series.html?id=5984) ENOMOTO Shunji [Golden Lucky](https://www.mangaupdates.com/series.html?id=44334) IGARASHI Daisuke [Obayashi ga Hikoeru Hi, Hoka (collected in Hanashippanashi](https://www.mangaupdates.com/series.html?id=2347) IRIE Kiwa [Haikibun! Sakanahime](https://www.mangaupdates.com/series.html?id=54246) IRIE Noriko [Neko no Te Kashimasu](https://www.mangaupdates.com/series.html?id=34406) KIMURA Kon [Koube Zaijuu](https://www.mangaupdates.com/series.html?id=6616) KITOH Mohiro [Vandemieru no Tsubasa](https://www.mangaupdates.com/series.html?id=2395) KOMAI Yu [Sonna Yatsua Inee!!](https://www.mangaupdates.com/series.html?id=16844) MATSUMOTO Taiyou [STRAIGHT](https://www.mangaupdates.com/series.html?id=9964) NIHEI Tsutomu [BLAME! (prototype chapter, included in NOiSE)](https://www.mangaupdates.com/series.html?id=2275) OHARA Shinji [Boku wa Otouto](https://www.mangaupdates.com/series.html?id=23188) SAMURA Hiroaki [Mugen no Juunin](https://www.mangaupdates.com/series.html?id=1628) SOUJI Hajime [Sanmon Mirai no Katei Houmon](https://www.mangaupdates.com/series.html?id=95297) TOUME Kei [Kurogane](https://www.mangaupdates.com/series.html?id=1034) TOYODA Minoru [Love Roma](https://www.mangaupdates.com/series.html?id=5227) TSUCHIDA Seiki [Miseinen](https://www.mangaupdates.com/series.html?id=65435) URUSHIBARA Yuki [Mushishi prototype chapter, collected in Filament](https://www.mangaupdates.com/series.html?id=35219) WAKANA Shouhei [Kamen Tenshi](https://www.mangaupdates.com/series.html?id=38659) **Other:** Hiramatsu Kannosuke [Yume](https://www.mangaupdates.com/series.html?id=134645) ABE Yoshitoshi [Ame no Furu Basho](https://www.mangaupdates.com/series.html?id=70439511114) Eshikawa is a man who has lost sight of his life and stumbles through it, with no clear meaning or purpose. One day, he is informed that his ex-girlfriend committed suicide, which sets his brain on retrospect mode. He goes on a journey of self-revelation and contemplates upon the myriad of human emotions, the joys and sorrows of normalcy. YAMAZAKI Ren [Like a Laika](https://www.mangaupdates.com/series.html?id=15464858831) From Atelier du Noir Scans: The daily, average life and interactions of some of a ship’s crew as they depart to explore space. Winner of the Jiro Tanaguchi Special Award for manga in the 2010 Four Seasons Award Anthology. NADEGATA Nazuna [Kokenoshima](https://www.mangaupdates.com/series.html?id=25320595156) From Atelier du Noir Scans: On a remote island, a skilled swordsman who honed his craft on the local population attempts to atone for his sins and lift a curse by hunting and killing demons. Winner of the Hagio Moto Special Award for manga. KIBA Kouichi [Jagua](https://www.mangaupdates.com/series.html?id=26870403448) As the protagonist is returning home one night, she runs into a man who had just been in a car crash. As he is dying, he asks her to throw a certain package into the sea. JOUYAMA Yui [Zanuff the Butcher](https://www.mangaupdates.com/series.html?id=57841268625) A butcher with a dark secret finds a little girl. HAYASHIDA Q [Sofa-chan](https://www.mangaupdates.com/series.html?id=9150331372) Tells the story of a female ghost who lives on a couch and it's the debut work of Q Hayashida as mangaka. KANOU Rie [Kingdom of Stars](https://www.mangaupdates.com/series.html?id=20282565791) Oneshot about love, religion, and a big misunderstanding that leads to a weird situation...