From Bakeneko's Lair: Poor, poor Akatsuki Homare. He's gotten himself into a mess of trouble. Considering his arrogance, he's getting exactly what he deserves. Yes, Homare, life is a game of give and take. You don't only get to be on the taking side...
From Wikipedia: Set in the modern age, the story is about Miharu Rokujou, who just wanted to live a normal life and inherit an Okonomiyaki restaurant. At the moment, his biggest problem was the constant pestering from Kouichi Aizawa and Durandal Thobari Kumohira, who started a Nindō (忍道?, lit. "Way of the Ninja") Club. Miharu wanted nothing to do with "ninjas" and turns them down every time. But soon, he is attacked by an actual group of ninjas and is protected by Kouichi and Kumohira. There, Miharu learns of the hidden ninja world Nabari, the roles of his classmate and teacher in that world, and of the secret art Shinra Banshou (森羅万象 Shinrabanshō?, lit. "all things in nature") within him. The secret art, containing all the world's knowledge, is sorely coveted in Nabari. And because of that, Miharu cannot return to his normal life. He must become the "Ruler of Nabari" to survive. From Baka-Updates: Rokujou Miharu was a seemly reluctant junior high student living in his own world. However, within him, lurked the ultimate power of Nabari, “Omnipotent”. To possess such supreme weapon, the Wolf Pack of Iga swore to bring Miharu back to Iga village. On the other hand, Miharu’s English teacher, Kumohira sensei, and classmate, Kouichi, were the Banten ninjas whose mission was to protect Miharu. A war waged over the ownership of “Omnipotent” thus started. To survive, Miharu must enter the hidden world Nabari, to become the king.
Ikewaki Gajirou, nicknamed Gacchan, is the most valorous of the Big 5 in his school. He's a pretty good person. However, he has one flaw that people fear him for...
Fateful Encounters: Tsunayoshi is Misao's non blood-related big brother. He used to be a juvenile delinquent and his love for his little sister is constantly embarrassing Misao, but he's a good guy that will do anything to protect his little sister. A powerful and dangerous brother x sister love battle begins!
All Miki Koishikawa wanted was an ordinary family and that's exactly what she had until her parents decided to move in with another couple and turned Miki's world upside down. Now she lives in a house with four parents and her totally cute stepbrother Yuu. It's bad enough being brought into her parents' strange soap opera, but Miki will star in a soap of her own as she deals with friends having affairs, trying to survive in school and ending up torn between her long-time crush, Ginta, and her new stepbrother!
From Evil Flowers: Inoue Azusa's classmate, Saito, is extremely good looking, but he has the worst personality ever. For some reason, he started noticing Azusa and gets her in a lot of trouble. Although he's very annoying, Azusa gradually becomes attracted to him. However, Azusa's classmate, Hikaru, is not only handsome and is the president, but towards Azusa he is...?! From Evil Flowers: Inoue Azusa's classmate, Saitou, is extremely good looking, but he has the worst personality ever. For some reason, he started noticing Azusa and gets her in a lot of trouble. Although he's very annoying, Azusa gradually becomes attracted to him. However, Azusa's classmate, Hikaru, is not only handsome and is the president, but towards Azusa he is...?!
From MangaHelpers: Ichinose Kouta is transferring to the academy his grandfather runs. He knows little about it, except for the fact that the students are mostly female, so he imagines that his life will soon become a delightful harem-type story. When he gets lost on the way to the isolated school, he finds out there's a lot his grandfather didn't tell him. The school is actually an all-girls school for ninja! At first, the girls think he's an intruder, and he barely escapes with his life! Luckily, the misunderstanding is cleared up, and he finds himself under the protection of the beautiful and deadly student council president, Fuyunagi Rindou. But even now, his life will be anything but uneventful, as he finds himself in the middle of an ongoing conflict between Fuyunagi's student council and another student group, headed by a girl known as Momochi Yayoi. [tethysdust]
Shirafuji's feelings of physical intimacy between him and and a classmate, Arisaka, are piling up. He wants to know how Arisaka truly feels about him, but he doesn't have the courage to ask, without exposing his "true feelings." He is terrified of getting hurt, even a little, but now it seems that his love is about to lose sight of reality. Two couples from this volume have sequels in another of her works Agetai Kimochi. Arisaka x Shirafuji from ch1 here and ch8 in Agetai Kimochi. Eiji x Yuusuke from ch7 here and ch2 in Agetai Kimochi. Chapter 5 is hard shota content, and not scanlated for that reason.
All begins when Soga Naoaki went to complain to the president of the student counsil, Yoshizumi Sekai, about the reducing of his volleyball team's bookings. By coincidence, Naoaki becomes the vice-president of the student counsil because of the health of the current one. He and Sekai don't get along, but what happens when they have to organise the school festival?
Onda Miku was just a regular high school girl who loves painting and designing nails. But suddenly, she got into a terrible accident, and the shinigami (soul reaper) Sei fastened his chain of death onto her wrist! Sei may be hot, but he is a bit scary. Being tied together with him, just what kind of fate awaits Miku!?
Quick tempered, dirt poor brawler Kotarou Mikata can’t hold down a job because he always ends up beating the crap out of some errant customer. Just when he’s at wit’s end, “S” offers Mikata a job as a “hero”. But what exactly does it mean to be a hero? Join Mikata on his WTF journey from brawler to hero in the action romantic comedy “Seigi no Mikata”!
The main character Totoki is an ordinary high-school student who leads a mundane school life. One day, a mysterious, primitive girl, Cherry appears before Totoki! Whatever Cherry does is a mammoth class! Because of that, Totoki is being thrown around mercilessly! Is Totoki's normal life gradually changing?!