“O, Hero!” With that cliched line, Kazuya Souma found himself summoned to another world and his adventure—did not begin. After he presents his plan to strengthen the country economically and militarily, the king cedes the throne to him and Souma finds himself saddled with ruling the nation! What’s more, he’s betrothed to the king’s daughter now…?! In order to get the country back on its feet, Souma calls the wise, the talented, and the gifted to his side. Five people gather before the newly crowned Souma. Just what are the many talents and abilities they possess…?! What path will his outlook as a realist take Souma and the people of his country down? A revolutionary transferred-to-another-world administrative fantasy series starts here! *Source: J-Novel Club, Vol. 1*

Normal college student Kazuki Hirasawa finds himself inside the body of Harold Stokes, an evil character in the world of Kazuki's favorite game, Brave Hearts. The problem is, if the game's events go as they should, he'll one day find himself defeated by the hero's party. Will he be able to find a path to survival and avoid his many death flags using the incredible power of Harold Stokes's body and his own knowledge of the game? Join Harold in this magnificent manga adaptation of the work that won the 3rd Shosetsuka ni Naro Contest. (Source: One Peace Books)

As a young boy, Chiaki Mikado had an encounter with an unusual, three-headed puppy, and as a consequence of a bite from that dog, he lost a piece of his soul. Now a teenager, he finds himself unable to enjoy anything, but the three-headed dog is back in human form -- or more accurately forms -- to fix all that!Turns out that the three heads of the mythical guardian to the gates of the underworld are actually unique individuals, and each a pretty young girl at that! With his new roommate(s) leading the charge, can Chiaki experience the happiness that has so long eluded him? (Source: Yen Press) *Note: Chapter count includes 14 extras.*

Mega Man Gigamix is a manga drawn by Hitoshi Ariga and connected with Mega Man Megamix, being that some chapters are prequels and others are direct follow-ups. The manga was published by BN in three volumes between 2009-2010 in Japan and by Udon Entertainment between 2011-2012 in the United States. (Source: The Mega Man Knowledge Base Wikia)

From J-Novel Club: In the far-distant future, mankind has traversed the stars and settled distant worlds. But no matter how advanced the technology of the future becomes, it seems the spacefaring nations cannot entirely shed their human nature. Jint Lin finds this out the hard way when, as a child, his home world is conquered by the powerful Abh Empire: the self-proclaimed Kin of the Stars, and rulers of vast swaths of the known universe. As a newly-appointed member of the Abh’s imperial aristocracy, Jint must learn to forge his own destiny in the wider universe while bearing burdens he never asked for, caught between his surface-dweller “Lander” heritage and the byzantine culture of the Abh, of which he is now nominally a member. A chance meeting with the brave-but-lonely Apprentice Starpilot Lafier aboard the Patrol Ship Goslauth will lead them both headfirst down a path of galaxy-spanning intrigue and warfare that will forever change the fate of all of humankind. Note: Won Seiun Award in 1997.

Kokudo and Hitsujiya experiment with the hacks and learn more about their strange nature. It’s all fun and games at first. But when Kokudo uses a hack to go back in time, things take a dark turn. Hitsujiya attempts to do the same thing, but if a hack’s directions aren’t followed precisely, the results can be devastating! (Source: VIZ Media)

Adaption of Ryou Suzukaze's light novel series of the same name. Humanity has learned to live in complacency behind its high walls, protected from the giant Titans. But when a Titan-worshipping cult opens one of the gates, a Titan wreaks havoc, consuming the cultists. After the rampage is over, two young Survey Corps members are shocked to discover a pregnant woman’s partially digested corpse—with her baby still alive inside it! What will the fate of this “child of the Titans” be? And how will humanity learn to cope with the Titan threat? (Source: Kodansha USA)

Sister Tao and Al are a pair of "trouble-shooters", independent odd-jobs men working in a red light district for whoever can pay. Then a little girl tries to pick Al's pocket...

The Nightmare of Fabrication is a beautifully drawn full-color manga from Yoshitoshi ABe. The 18 page short story can be found in the Lain Omnipresence in Wired artbook. The manga serves as the missing "Dc1029" file from the game and appears to take place in the same continuity as the game, although there are elements of the anime as well.

High school junior Suzume has no idea why the beautiful stranger she meets is looking for ruins, for a certain door. Soon after pointing the stranger, Souta, in the direction of an abandoned resort, she thinks better of it and goes to try and stop him. But before she can find Souta, Suzume unknowingly opens a decrepit door to a world beyond time and place—and stumbles into an adventure of seismic proportions. (Source: Kodansha USA)

Naruto, a born troublemaker, has the worst grades of anyone at Ninja Academy. But he has big dreams and swears that someday he'll be a respected warrior and the leader of his village! After barely graduating from the academy, Naruto officially becomes a full-fledged ninja and starts accepting assignments. He's thrilled about embarking on his first big job, a bodyguard mission, but his enthusiasm soon turns to panic when his group is ambushed by the powerful, vicious Demon Brothers. Can Naruto triumph over these fearsome foes? (Source: VIZ Media)

This is the story of Miyu, a woman who lives alone with her cat, Chobi. As Miyu navigates the world of adulthood, she discovers both the freedom and loneliness that come with living independently, and Chobi learns of the outside world through her actions. Time drifts slowly for Miyu and her cat, but the harsh realities of the world soon catch up … (Source: Kodansha USA)