From 801 Media: Mizuki gets molested on a train bound for school, and the perpetrator is none other than the school president, Azuma! Mizuki gets called to the student council room, where Azuma confesses his love for him. So begins the tale of this wacky school story. Poor Mizuki has the worst luck. Gifted with beauty that rivals most females, he finds himself defending his honor in more ways than one. When he gets molested on board a train for school one day, he starts to think things can't get any worse. That is until he is called into the student council office by the president, Azuma. Turns out the perpetrator of that morning's foray is none other than the student council president himself! Azuma is not one for one night stands and begins his campaign to make Mizuki his own.

From Echochi Scans:

Two families are tied together by a curse. Every 100 years, one person from each family must share the same fate for exactly one year. The pair will be subjected to 12 misfortunes where one will get hurt while the other must sustain their injuries in return.

When Kagura Ikumi was 7, his parents died in an accident. Since then, he has been living an ordinary life. Until the day of his 17th birthday where he meets a mysterious transfer student, Ichijyou Chihaya. However, this fateful encounter between them is only the start of their intertwined fate. For the next year, the two of them will be forced to face 12 misfortunes on the 13th of every month, a curse that has never left any previous pair alive.

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...?!

After constantly transferring during middle school (Warau Kanoko-Sama), Naedoko has entered Takara No Tani High along with Tsubaki. Follow her adventures as she tries to restore the Newspaper Club's status without being noticed by the Broadcasting Club or Student Council...!

Saiga-san likes to talk about random trivia to Sano-kun.

Author's Twitter: https://twitter.com/skmsy34

Bringing you a romantic tale that all begins with the radio. ♪

Hardcore radio enthusiast, Taiyou Kimishima, spends his high school days dreaming of establishing a Radio Studies club. Unfortunately, like-minded people are hard to come by, and Taiyou serves as the club’s only member. And then one day, a fateful encounter at Radifest lands him up-close-and-personal with someone who could end up being the girl of his dreams...

Kei moves to Tokyo to live with his old friend and lover, "Mii-kun." Their quirky neighbours in the apartment block keep ruining the mood, but there are bigger obstacles to overcome before they can truly become lovers.

She was in the 3rd grade of middle school, he was in the 1st grade of high school. She met him at the basketball match for the first time. He was so amazing, she fell in love at first sight and decided to enter the same high school he's going to. After she managed to get into Shuuei Institute, she expects her happy love life to begin but... what if the guy she liked was held back a year?! And what if he told her to "never come near him again"?! No worries, Tachibana Riri will not give up!

A wholesome heist- "love comedy" starring a gentleman thief and a police inspector!

In order to become a Strong and Cool girl, the highschool girl Mie Tsukasa joins a professional wrestling organization. Follow her intensive training every day together with her trainer, with the aim of becoming a pro-wrestler.

From Intercross:

Rinko really loves Jun-kun, a manga hero! Yet when Shin - a total playboy and the type Rinko dislikes - makes fun of her, she decides to...?!

From YaoiOtaku:

A story about an excellent and manly salaryman, whose beauty is extraordinary? the senpai Kitagawa-san and his, although dumb, but very handsome kohai, Nakamura-kun. In the middle of night with a bottle of sake, a very girlish confession of the sort "Oh là-là, it's hentai!", is to hover over the poor kohai Nakamura-kun. Backed up with his very own fantasies and undeniable desires, he jumps his sempai Kitagawa-san.., unexpectedly though Kitagawa-san doesn't have anything against it!! Two young boys, two love birds start the beginning of their love story! The very awaited book ? written especially for you!

From Shoujo-Sense: Tsubasa and Shou have been friends ever since they met in kindergarten. Now they're starting high school at the same school, in the same class. Tsubasa has been in love with Shou for years, but never found the courage to talk to him about it. Still, she thinks he may feel the same... until they meet a girl who changes everything. Could she be the one whom Shou truly loves? And what does that mean for Tsubasa?

From Fantasyshrine: Ryuzaki is an aloof high school student who likes to seclude himself in the infirmary. This, however, teases the stubborn school doctor, Wataru, to seek out other men to quench his lust—!? Or is this love? They both wonder as they desperately fight with their morals. To do or not to do?

Older brother forces younger into a sexual relationship after their parents' death.

The creature known as man is quick to misunderstand.
The same applies to the the pure middle-schooler Yokoyama-kun: A diligent fellow who does his infirmary duty properly.
"You're so nice. Thank you." The one to say that to him was his classmate Nishino-san, so Yokoyama-kun ended up thinking: ("Isn't she only nice to me?!")
He couldn't help but be hopeful. ("Does she like me?!")

This is the start of the misleading life between the fantasizing Yokoyama-kun and the equivocator Nishino-san.

From Chibi Manga:

I don't have family, friends or a lover. But there's someone I love. We have that strange relationship: childhood friend.

Alternative Description:
Koharu and Nacchan are childhood friends which many of their friends thought they are a dating couple. Soon, after getting into senior high school, Koharu feels something different with Nacchan. While Koharu tries to figure out her feelings, Nacchan's already falling in love with someone else, the beautiful Saionji, but his love doesn't stop him from caring for Koharu. Does what Nacchan feel towards Saionji really be love? Why can't he let Koharu go on a blind date? "Love is a word that describe so many kind of feelings"

When Soushi saves Himiko from a pair of foul-mouthed classmates, he demands to let him smell her in exchange...?

A humorous, original Doujinshi by the mangaka of Denkigai no Honya-san

Takatoki is a high-school boy with an intense obsession for manga and anime. He desperately wants a typical anime romance with a girl who falls into a typical female anime stereotype. His childhood friend Chiyoko, a very unladylike girl who is a notorious fighter, tries in vain to get his mind back to reality.

One day, the two of them run into a girl in a sailor schoolgirl outfit being threatened by a generic band of thugs. As Chiyoko beats up the thugs, Takatoki learns that the girl, Asadzuma Youtsugi, is a cosplayer who wants to lead the life of an anime character. Was this Takatoki's fated first encounter with his future anime lover!?

A collection of stories inspired by Grimms’ Fairy Tales.

Story 1, G's Diary: A girl with no memory of who she is spends her days working in a house she has no memory of entering.
Story 2, Frau Trude
Story 3, The Summer and Winter Garden
Story 4, Little Red Riding Hood
Story 5, The Frog King or Iron Heinrich
Story 6, Little Brier-Rose
Story 7, The Bremen Town Musicians
Story 8, Rapunzel.