From Bunny's Scanlations and Must Be Endless:

Top student Mizusawa, third year in high school, was kissed by his drunk homeroom teacher, Takatsu (37 years old). After being told by a dazed Takatsu, that he'll stop the unrequited love he's been holding for him ever since his school entrance, Mizusawa has for the first time taken an interest in him. A few days later, ever since his secret was known, Takatsu has been scared of Mizusawa getting close to him and each time Mizusawa would shudder with excitement. However, one day after learning that Takatsu has gone to a marriage interview, suddenly Mizusawa realized that he wants the older man. Also features the adult love between a mail carrier doggy type and an ill-tempered novelist.

Volume 1 : Young Bad Education
Volume 2 : Young Good Boyfriend

From Exiled Rebels Scans:

The thing Hara Dai hates the most is people. To him, every single person is troublesome. He was bullied and bothered so much throughout middle school that he debuted as a delinquent in high school. However, whether he’s plain or flashy, it seems the only person who isn’t bothersome is the janitor.

3SM Scans Presents:

Falling in love with a painting while at a school's festival, Iku is able to meet the gentle high schooler who created it. She falls in love at first sight and with that feeling in her heart, decides to enroll in that high school! But, what happens when she joins the art club and discovers her gentle prince has disappeared and a sleazeball has taken his place?!

From MangaHelpers:

This manga is a collection of yuri romance short stories. Most of the stories take place in school, though one features an idol group. A few stories involve sexual situations, but others are more focused on feelings and tension. The first story features a girl whose secret place to be alone is discovered by a popular girl from school. Other stories include an ambiguous relationship at an all-girl's school, a girl who meets a gorgeous exchange student, and a trip to buy lingerie that ends up in an unexpected situation. [tethysdust]

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Have you ever confused love? In the end what is really like ... This is a funny, cute and lovely for anyone who are shoujo ai fan..

Towa has always been shy around guys, despite being a total tomboy. This has crushed her chances of ever having a boyfriend, but a perhaps fateful encounter on the first day of high school might lead to love? But will it be with the surprisingly kind "angelic" delinquent, or the popular yet secretly "devilish" prince?!

From Condensation: Momo Yamada wanted to be a flower when she grew up, but she's blossomed into nothing more than a rather homely teenager. When her grandmother passes away, Momo becomes a live-in maid for the two sons of a elegant fashion designer. After the eccentric eldest son, Ranmaru, gives Momo the makeover of her life, she discovers that her mother was a legendary Hanabito, a beautiful woman who has a divinely intoxicating scent that draws men to her like bees to nectar. What's more, Momo learns that she, too, gives off that same irresistable aroma. Although she and Ranmaru have fallen in love, their relationship now must withstand constant assault from handsome boys and men who desire to abduct and seduce Momo. *Also contains the following stories: • Akuma no Himegimi (The Devil and the Princess) in vol. 1 • Kamisama Shikkaku (God's Disqualification) in vol. 1 • Hanamaru Scoop! (Flower Garden Special Review) in vol. 2

She. Because her parents died when she was young, she had to work at her relative's restaurant.

He. Born to a rich family representing the Kiryuu family and leaping forward in the world of economy.

Whether it's birth or childhood environment. They're world's apart. They had nothing to do which each other's lives, or so they thought...

(Source: Kisu Kissmanga Scans)

Shinichirou decides to look for a job in order to pay his rent, and his teacher suggests that he work for someone at their house, doing housekeeping. However, the person who hired him was Sakuya, a girl who is the 37th head of the Shimazu family, and her job is to exorcise and eliminate unwanted creatures. Shinichirou accidentally releases one of the creatures that Sakuya captures and they cooperate to catch it. A story of comedic creature hunting begins!

Note: Read this if you are confused about the chapter numbering.

Three young pilots connected by the Getter Rays (Ryoma Nagare, Hayato Jin, and Musashi Tomoe) are recruited by Dr. Saotome to fight the Devolved beings appearing from spatial distortions using the only weapon that can face these monsters, the Getter Robo. The Saotome Institute however holds a dangerous secret, a fragment of the being called Emperor which connects the Getter and its pilots to parallel worlds, including the presence of people from those worlds such as an older Hayato and Dr. Shikishima.

A story about two high school friends, Ohara and Kawai.

A story about a shared loved for astronomy, a hidden love for each other.

Seven stories of witches attending a school of magic who must summon their own guardian spirit and partner — a cat — when they turn 13 years old.

A short (two-three pages bimonthly) gag manga about two best friends, one of whom (Ayame) is in love with the other (Amane). Each chapter follows the hijinks of Ayame's advances towards Amane, which usually end up in comedic failure.

From Animexis: Ishidou Natsuo is a gifted girl who can achieve anything she wants in sports. Because of this she is permanently bored, as there aren’t any real challenges to her abilites to make her feel alive. One day she receives an invitation of a merry girl to join her martial arts club. Irritated by her happy expression, Natsuo decides to accept the invitation just as a pretext to beat her up, but she receives a shocking surprise.

Otome is a girl who is half. During high school, she encounters an animal-loving and mildly mysterious Natsume-sensei. She is also struggling with her social relationships. With this encounter, will her school life change?

A combat-game loving neet. full of hope, arrives in world ruled by the beast race.

A story of a Different world, the same passion, one small step at a time, an unimportant person becomes the great conqueror. Moving, Explosive, Bloody forever!

Ch 1-6 Ono slept with Yamada, a high-schooler, when he was drunk because of a break up with Hidenori. Ono thought of it as a one-night stand, but Yamada went to Ono’s workplace to look for him the next day. On top of that, Hidenori requested for reconcile. Who will Ono choose? Will it be the passionate love with a high-schooler or a steady relationship with his ex-lover? 7-8 Fire Fighter Academy, can he fullfill his uncle's dream of being a fire fighter despite having no stamina or will he find something else instead?

Included one-shot: Umaku Ikanaishi Tsuke no Houhou

Manga adaption of H. P. Lovecraft's "At the Mountains of Madness" novel.

The story details the events of a disastrous expedition to the Antarctic continent in September 1930, and what was found there by a group of explorers led by the narrator, Dr. William Dyer of Miskatonic University. Throughout the story, Dyer details a series of previously untold events in the hope of deterring another group of explorers who wish to return to the continent.

The story has inadvertently popularized the concept of ancient astronauts, as well as Antarctica's place in the "ancient astronaut mythology".