From Chibi Manga:

Too far, it's hard to be seen. Too close, it's also hard to be seen. It hurts and makes you feel like crying. Too sad, until it makes you laugh. That's right, this is what you call first love…the most popular guy in school falls in love for the first time in his life!

From Midnight Scans:

Rin and Hiro are childhood friends. The truth about Hiro’s love that he can’t confess is…?

Note: Original language image is unavailable.

Why would Kashiwaya be so bothered by Hibino’s adam’s apple? Kashiwaya couldn’t figure out the reason and thought maybe he might be a vampire. After pushing Hibino down and started licking at his throat, Kashiwaya felt so good that he didn’t want to stop. What is going on? The pure and innocent love story of a unique high-schooler, Kashiwaya, and his classmate, Hibino

Nishino Yuzu was all pumped to start her second year of high school, but as she begins her new school life, she meets a strange new classmate in Shinjou Kanata. "I don't understand him. We can't get along." or she thought, but through glimpses of how kind and dependable he is, she gradually begins to take interest. What could this feeling be...?
Here you'll find a girl that you can't help but cheer on!

Jinguuji, who‘s not coming to school, is the most “talented“ in his grade. To get this son of a yakuza to attend lessons, Yuuki, the assistant teacher in charge visits him at home. But when Yuuki gets the attention of Jinguuji, who is with a girl, the latter suddenly gets aroused and forces Yuuki to sleep with him….! Is there a “family secret“ Yuuki‘s not allowed to know hidden in the ferocious eyes of Jinguuji who‘s devouring Yuuki‘s body —? The long-awaited manga-version of the popular “werewolf“ love story ♥ Presenting you the comic & novel with plenty of erotic scenes!

From Phantom Scans

Kyoichi's elite high school and the delinquent school next door are separated by only a fence. One day by the fence, Kyoichi meets Chiba, a fearsome student known for speaking with his fists......a school story of star-crossed lovers.

This volume includes short stories of four couples.

Collection of oneshots

From Blissful Sin:
With naked bodies in close contact at a hot springs inn on a school field trip, they’re hot to trot! ♥ Horny Keitatsu’s erotic rampage on Ran just won’t end!
The boys from “Bousou Kareshi” – Keitatsu x Ran, Seisuke x Tsubaki, and Himura the shota-con public health doctor – all are getting worked up and having extremely perverted sex! ♥
The climactic comic!

1) Punishment Sweets
Misaki forgets his boyfriend Rui's birthday, how can he make it up to him?

2) Love Fever Boy

3) Hot-to-Trot♥Boyfriend

4) Phantom♥Boyfriend?!

5) Love♥Fighter!

6) Oppai Fighter!

7) Himura-sensei no Junan (The Suffering of Dr. Himura)
Himura Yuu is a high-school doctor with a serious shota complex and there's only one person standing in the way of his virtual smorgasbord; his colleague, Ashiya. Himura is clueless as to why Ashiya interrupts him everyday, but when he learns of their previous connection, things become all too clear.

8) Himura-sensei no Moekare (Himura-sensei's Moe Boyfriend)

9) Lonely Little Bird

10) Love♥Love Je t'aime

From Attractive Fascinante:

In the Royale School, because of his nice name, Ayamoji Kokuei was being targeted by a yakuza’s son, Shirogane Michihiko (real name: Kintarou). Ayamoji began to skip lessons and repeat grades to avoid meeting Shirogane. When they met six years later, Ayamoji drugged Shirogane and they got intimate. Ayamoji left after that and reappeared five years later. Would the two lovebirds finally be together?

Maki Takano and his three best friends Ryo, Natsume and Mei are students at a private academy for highly gifted children. Like all the other students of this isolated and heavily guarded school, they have never seen the outside world since they were brought to the school at the young age of three.
When a new female student named Kiriko Hinatsu arrives, Maki has the strange feeling that he has met her before. However, he seems to be the only person who can remember the girl. When he confronts her with his discovery, Kiriko reveals the unbelievable truth about their existence and the school they're attending.
Maki now has to decide: will he continue his school life or will he help Kiriko escape even if that means putting himself and his mental health at risk?

From Lovers Dream: This is about Chihiro, a teenager who has only gone to an all-girls school and has no experience with boys whatsoever. One day, a boy that she sees at the train station every day asks her out and thus she begins her first relationship. This manga portrays the up and downs of first love with a good dose of humor

A collection of short stories about first romantic relationships. When young people first start dating, there's a lot of shyness, miscommunication, and embarrassment involved. How do you figure out the perfect time to grab a girl's hand while walking together? When is the right time to share your first kiss? These brief stories capture the innocent awkwardness and the excitement of falling in love.

From Yaoi Is Life:

Ryuuji and Ushio haven't seen each other for fifteen years. It was supposed to be a happy reunion between childhood friends, but because of something that happened long ago, the relationship between the two is strained...?! Taking place in the worn down apartment, “Haitsukoiwa”, four omnibus love stories that make the heart flutter are unfolding.

From September Scanlations:

Hirono Yuusa always believed he was special and destined for greatness–until tragedy struck in his final year of middle school. Now, jaded and disillusioned, he’s completely given up on ever trying to be anything more than ordinary. But when he starts to notice classmate Himekawa Ichigo struggling to do his best against all odds, he can’t help but want to cheer him on.

Ordinary high school student Ayane has fallen in love with Sena, a number one nightclub host! Moreover, he is her first love!! Dangerous love affairs of pure-hearted high school girls are depicted here.

Extra Oneshot 1: Fictional Dreamland
Sakura have been going out with her boyfriend, Yuki, for three months already and they haven't even kissed yet. One day her friend brought her a charm from an old lady to test if Yuki really likes her. In one of their "dates" she try it out...

Extra Oneshot 2
One day Satome Yuki bumps into one of her classmate, Sahara Masato, in a horse market which is her secret. In exchange for keeping her secret she became his "screen".

From Chibi Manga:

Minako entered in the same high school as her nephew Shuu. And then she figured out that one of her classmate is the guy she loves: Takuma. She will have to make a choice between love and friendship.

Included in this manga is a two chapter short story called Sakura no Kioku in vol. 2:
Her graduation ceremony is approaching. Because she wanted something else, she decided to break up with her boyfriend, but...

From Antisense Scanslations:
4th-year Elementary student Kotone is obsessed with the aesthetic appreciation of muscles, and her older neighbor Jouji is her ideal body type. But lately, Jouji has been so down his pectoralis major hasn't even been tense. What's a girl to do?

Sakurako Kagawa has never had a friend through primary and middle school. It turns out that the reason for that is because she always seems to draw the weirdest drawings. Newly serialised with the high school art room as the stage, it’s sure to make your heart beat, a pure and bright romantic story.

The reunion between a once-cool guy who's now one of the shortest boys in his year, with average grades and so-so sports skills, and the feminine-looking crybaby who used to hide behind him all the time who's now smart, handsome and popular.

From Chibi Manga:

Clumsy and ordinary mao, thanks to a pet dog, she get to know about her handsome classmate's life after school...!?