The second shounen-ai manga ever published, The November Gymnasium focuses on chaste, yearning love between boys at a prestigious German boys' school.

Contains Poor Mama (Kawaisou na Mama)

The cute-faced but super strong at fights delinquent - Kotarou, and the excellent, sports all-rounder honors student - Yamato. The two are seen as polar opposites, but they​'re actually in a lovey-dovey relationship. Seeing his beloved Yamato's nape and lips fills Kotarou's mind with "perverted thoughts". But when he's touched, he panicks and throws a punch...?!

Bae Songwoo is in a one-sided love with his longtime friend, Kim Sangjin. Living his life hiding his feelings, one day Bae Songwoo finds a suspicious book in his house, and written inside is Kim Sangjin's life story.
But Bae Songwoo is just a passing extra...?!
As he tries to ignore the book, Bae Songwoo soon realises that everything is going as written...

Two boys try to celebrate their one year anniversary, but things don't go as planned.

Chiharu Saeki and Wataru Toda are two high school students who share a common hobby. They love to watch movies. After they meet, they become fast friends until one day, their relationship takes a sudden twist. What does it mean to love someone? What can you really do about it? Follow the story of their adolescence and relationship as it unfolds through a brilliant summer.

From xiaojiangworld

Hibi starts working at his old school as a librarian and reunites with his former senpai, Sugino, who's now a teacher there. Although he confessed to Sugino in high school, he was told that his feelings were a misunderstanding and that he didn't understand the feeling of 'like'. Even so, Sugino now says that he likes Hibi. The feelings Hibi has for Sugino now is no longer love- it is hatred...

The freeter, Yui, found a stranger in a tattered state along the road. His name is Toshiki, a man with a strange appeal. Yui couldn't leave him alone, and so, he accompanied the stranger back to his house. Upon getting there, Toshiki revealed to be wilful, and Yui decided to go along with him. The next morning, however, he found that he has been trapped inside Toshiki's house.

Nakamura is a shy boy who falls in love at first sight with one of his classmates–his dreamy high school classmate, Hirose. But there's a problem: they haven't met yet. And Nakamura is a total klutz who might bungle things before they even begin!

Takeyoshi's dad seems to have a crush on one of his co-workers...a very pretty man. Takeyoshi's troubled by this for obvious reasons, but it turns out that he'll have even more reasons to be troubled once he actually meets the guy.

With a nickname like monkey eyes shorty, Yoshida doesn't have any good points appearance wise.

On one fateful day, his school life changes completely when the most popular guy, Satou, confesses his love to him!

But there are rumors aplenty that Satou already has a lover in the school, so is he just making fun of Yoshida?!

A couple that has been together for 3 years, but dated even less than 100 days... And, because of the playing-hard-to-get Jaehwa, Dohyung is making a fuss. Dohyung wants to do something about it, because of the naive Jaehwa, he gets really upset. However, the highschooler who lives on the 1st floor is weird. Their story is all about being foolish and clumsy in front of love.

The accidental meeting on that rainy day started everything... Koutarou keeps running into his old classmate from elementary school, Kaneo. Upon being ignored the first few times, Kaneo finally tells him to never talk to him again. What will happen between the two?

The town of Gelle is home to many wizards. Lee, a socerer, and Rabel, his apprentice, live on the outskirts, on top of a hill. They may not have much money, and Lee may be a little odd and unsociable, but Rabel is content with spending his days learning magic and going to school. Lee watches over Rabel, sometimes strict and sometimes soft, but...

English version via Renta!

Volume 1:
1) Days Wishes Fall by YUN Ji Woon
About the relationship between a father and a daughter.
2) The Door by KIM Yeon-Joo
The reminisces of a girl in the temporary care of a lord apparent.
3) The Ravages of the Tiger by SEO MOON Da Mi
A girl seeks revenge and death through hunting a tiger.
4) The Night has a Thousand Eyes by LEE Hyeon-Sook
The relationship between a boy, his girlfriend, and her cousin.
5) I Hate You, Dad ♥ by LEE Si Young
6) The Road the Dead Pass By by PARK Eun-Ah

Volume 2: "Boy's Love"
1) 달밤은 위험천만! SHIM Hye-Jin
2) Get Real Na Yeri
3) To Be Born In an Endless Night LEE Hyeon-Sook
4) jardin de chouette 올빼미의 정원 Kang Hye-Jin
5) But... by LEE Si Young
6) Lunch SHIN Yoo Ha (신유하)
7) Sanctuary by RHIM Ju-Yeon

Volume 3: "Antiq + Sad"
1) Moon Palace [월궁 (月宮)] by YUN Ji Woon
2) by Kang Hye-Jin (강혜진)
3) And... by LEE Si Young
(Shounen Ai)
4) Sorrow [哀 (슬플애)] by Park Ki-Hong & KIM Seon Hee
7) Hijo de la Luna by SHIN Ji-Sang and Geo
A noble man recalls the tragic story of a boy born out of wedlock and the supposed curse upon him because of his white eye. The cursed boy lives a harsh life and falls in love with someone forbidden to him. In the end the beast kills the one he cared most about.

Volume 4: "Older"
1) Shepherds by Kwon Gyo-jung
2) Bride by Aivan
3) (황금나선의 경로) by YOO Shi Jin
4) Sweet & Sweet (달콤하고 달콤하도다) by KIM Se-Young
5) (너는 나의 달빛) by LEE Si Young
6) 1000 Years in Your Eyes] (천년도 당신 눈에는) by RHIM Ju-Yeon

Harasen, a single, lonely 37 years old highschool teacher is unable to cope the departure of a student, who is also his subject of unrequited love. Faced with a love sickness, he returns to the clubbing scene to start afresh where he tangles up with a very troublesome guy...

High school boy whose heart doesn't beat meets the man that stirs up his heart.

When Ryuuta was 6 years old, he was attacked by a youkai. At that moment, a mysterious boy named Izumo came to his aid and exorcised the youkai. Izumo gives a promise that when Ryuuta gets strong enough to be by his side, they’ll meet again.

After 10 years, their paths cross once more. But it seems like Izumo doesn’t remember Ryuuta or their promise! When a youkai threatens the village, Ryuuta tries to help but Izumo ends up getting injured. At that moment, he transfers some of his power to Ryuuta...with a kiss! Together, they exorcise the youkai, with Ryuuta vowing to protect Izumo from now on and following him on his travels!

(Note: “Yokai” are supernatural spirits or monsters in Japanese folklore.)

From Moon Bunny Cafe:

There are some guys who are bothering me. Just when I was grinding my teeth and planning to get back at them, I found a strange notebook!

From Yuzu Scanlations:

Sakuto, a company employee, Kousuke, a bar manager and Yuutarou, a shop manager met in college and have been close friends ever since. Although their sexualities, jobs and personalities are different, all three have on thing in common: each has lost his grip on life, friendship and love. Their determination to overcome these bad experiences and move forward binds them together.