Ikuo Ryuuzaki and Danno Tatsuya are 2 orphaned boys who were looked after by a person they called 'sensei'. Following their sensei's brutal murder, the two vow to hunt down the killers and the police officers who neglected to properly investigate the case. 15 years later, Ryuuzaki is a police detective and Tatsuya has become the leader of a group of mobsters. Helping each other out behind the scenes, they strive to rise to the tops of their respective fields so that they may exact their vengeance.
Little Busters!' story revolves around the main protagonist Riki Naoe, a young male high school student. When Riki was a child, his parents died, leaving him hopeless and depressed. What saved him was a group of his friends who referred to themselves as the Little Busters; they took Riki out and played together with him during his time of need. He really enjoyed playing with them, and his grief gradually faded away. When the story begins, they are in their second year of the high school they attend. They still hang out together, and enjoy their school life. (c) Wikipedia
A series of 4koma comics drawn by various mangaka involving characters from the KEY visual novel Clannad.
From Osuwari Team: “I want to get a boyfriend in high school.” Born on the same day, at the same hospital, Asuka and Tomaru were always together. Though they seem more like twins than real twins, Asuka’s desire for independence means separation… a complicated situation?!
Oneshot from Nisioisin and Kawada Yuuya. A boy suddenly wakes up to find out he's in the body of a High School girl. Who is she and how did he switch bodies?
Living as the heir to the Togami Conglomerate, Byakuya Togami is suddenly attacked while on a trip to Prague with his biographer, a fellow student at Hope's Peak Academy referred to as "Blue Ink". Having his identity (and clothes) stolen from him, Byakuya listens as the imposter announces on live broadcast that, should he not be killed in 24 hours, he will take over the world. As the world descends into chaos with the propagation of the mysterious "Despair Book", it's up to Byakuya and Blue Ink to escape assassins and uncover the truth. (Source: TV Tropes)
"I wanted to see you” are the words Kasugai Tenka wants to hear from a girl more than anything. And when the high school student hears it from Tsukimi, a girl literally out of this world, his life is about to get crazy. Tsukimi was a war general on the Moon, but she was exiled for the destruction she caused and her memory is wiped clean and she's changed into a bunny. She reminds Tenka that years ago, he fed her soba from his dad’s soba shop and that now that she's gained human form and her powers back, she wants him to be hers.
Kuhou Komado tries to scout Haimura Enjirou to the baseball club in Benten high school after hearing that he led Toyosawa to be runner-up in only one year and then suddenly disappearing like a smoke. But he has no time for baseball as he have 100 million yen debt. Benten is in dire situation that makes Kuhou Komado agrees to paying his debt in exchange for playing for them.
There once was a monster called Karma who loved to challenge his victims to a battle of wits. If the subject succeeded, the monster would grant them one wish, but if they lost, he would devour their soul. At the same time, there was a young monk called Hanasaku Ikkyuu, who was famed for his cleverness. He used to eagerly sharpen his mind, solving challenging riddles sent to him, until his mother fell ill. When he found that his cleverness was of no use in helping her, he gave it up. Karma seeks out Ikkyuu, eager to bet him in a battle of wits and consume his soul. One day, Ikkyuu rescued a young beggar boy, only to see him fall ill with a mysterious illness. That same day, Karma finally finds Ikkyuu and offers him his dangerous bargain. Thanks to Karma, will Ikkyuu finally have a way to use his cleverness to help the people around him? (Source: MangaHelpers)

