From Hoshikuzuu Scans:

Tobari's always loved cute and feminine things. Which sparks his eventual venture into drag. One day, while he was out in public dressed as a high school girl, he bumps into fellow classmate, Inui. It's annoying to Tobari how amusing Inui finds it, but at least he's promised not to tell anyone. But with no plans of letting him off for this hobby, Inui proposes something outrageous. He is twisted and unstable, but for some reason, his words are reassuring. A story of a secret love woven with something unnerving.

N/A

"Why am I in a place like this...... kissing HIM......?'' Awkward class loner Mitsuo Hanaori has a pet peeve - the handsome and popular Hachiya, who's always at the center of the class. He has soft hair and clear skin, everything comes easy to him, and his voice is easy on the ears - it's all just so irritating...... But Mitsuo can't take his eyes off Hachiya, who scores perfect shots in basketball class, and he twists his ankle as a result. After helping walk Mitsuo to the nurse's office, for some reason Hachiya suddenly brings his face close as if to kiss him!! Mitsuo's freaking out and his heart's pounding like crazy, and to his mortification, his JUNK is responding......! To make things worse, ever since that day, Hachiya's started coming onto him on a daily basis...... Just what the hell is going on!?

From Go! Comi:

Like most teenagers, Mashiro Ichijo has a secret. But Mashiro's secret is that he’s neither fully male nor female! So far, Mashiro's been able to live his life as a boy, but all this changes when he's informed of a new class he must take in order to graduate from his elite prep school. To pass, he must find the “Key”…and the only way to find it is to enter into a nightmare world where his body and soul are put at the mercy of the worst kind of enemies: his classmates!

Compilation of short stories:

• Koisuru Himitsu (Loving Secret)
Ever since kindergarten, Sumiko grew up never knowing love. At her school, they enforced strict discipline. Yet, tonight is the last "Free Night." Will Sumiko be taught "first love" by heading for that place?

• Houkago Host Club (After School Host Club)
Contuation of the first story

From Evil Flowers
• Snow Black Christmas: It’s Christmas Eve and Fuuka is preparing to meet with her boyfriend. They’ve been dating for 3 months and she’s still not sure if she’s supposed to spend the night with him, but in the end she gave in to his pressure. Her date goes all wrong when she is seduced by a beautiful dancer called Take. Who is Fukka going to choose?

• Sadistic Darling

High School Student Kiriyama Kyotarou's parents own a beauty shop that he helps in everyday after school. Due to the fact he has to go home to work everyday after school, he never has the chance to get a girlfriend or join any clubs. But that may change since the delinquent female gang-head of his school asked him to teach her how to be an idol.

Contains 3 oneshots:

1) After School Kiss
All the guys think Fuyu Yamashita is the stupidest girl in school and dare the guy who does the worst on the next test to go out with her. That guy turns out to be Minato Sakurai, the scariest guy in school. Poor Fuyu?

2) Making an Angel
Sayaka Sunohara a highschool student and a talent scout find a cuteish boy playing with a cat. Thinking that he would make a perfect image of an Angel she brings him to her mother's agency. After the makeover, he fits the image perfectly. When Sayaka asks him "what would you like to eat?" as a treat for his successful photo shoot. He say "I would rather have you instead...". what would Sayaka to do with this Cute Angel or rather a Bratty Devil?

3) Young Nobleman Lock On!!
Iori Seto known as the "Stupidity Queen" has a crush on Motochika Ishida who happens to be a school elite, a cold student body president plus the chairman's son. Just to stay close to him she decides to join student body. But all she does is cause trouble for Motochika. How will Iori be able to lock on this cold young nobelman?

From Shoujo Crusade & Eternal Heart:

Akabane loses a game of bridge and thus his feelings for their classmate, Satsuki is revealed by his friends. He denies it immediately but somehow she's attracted to him too?

Also contains:
Half a Year - Kimi to 6-gatsu
Kirai Kirai Mo?
Kimi ni Yell wo!
Kirai Kirai Mo? - Extra

A high school girl is in love with her friend, but he already has a girlfriend. She decides to hide her feelings for him and live her life as usual. She gets set up by a friend to attend karaoke where a senpai takes interest in her. How will things turn out for her...?

Nagato Aoba enters the student council after much effort and heartache (Suki Dakedo!) but at what cost? Not liked by the rest of the council, incessantly pursued by Yura, and a hidden relationship with Maki, seems like enough trouble, but... is there more looming his way? You bet there is!
Watch out, Aoba!!

Enter After School Men's Harem survival of the fittest!

St. Kleio Academy is a very exclusive school: all of the students are clones of famous historical figures such as Beethoven, Queen Elizabeth I, Napoleon, Mozart, and Freud. All of them, that is, except for Shiro Kamiya. As Shiro struggles to adapt to this unusual campus, St. Kleio's first graduate, a clone of John F. Kennedy, is killed. Are the clones doomed to repeat the fate of their genetic progenitors, or can they create their own destinies? And how does a normal boy like Shiro fit in?

In a classroom after school, Sawaki of the Athletics club and Mizutani of the going home club practically almost never spoke to one another before then. Their relationship started by an intense kiss by Sawaki. In a locked-room infirmary, library, home, and school trip… They deepen their love timidly but passionately. A story about secret lovers that will move your heart endlessly!

After years of being unlucky with girls, Ishimaru Daito only wishes to enjoy his high school life with a normal, cute girlfriend. However, after losing a game to his two new seniors Sasahara Kiyoka and Tomochika Asami, he is forced to join the < Humanism Studies > club which is actually a torture studies club. Will Ishimaru get the normal high school life he always wanted?

After the disappearance of his parents, Suzuki Tooru was all over the place and somehow ended up as a caretaker of a school dormitory in Tachikawa. The dorm building is all tattered. Its student boarders are all weirdos. And of course, there are rumors about ghosts haunting it too. Turns out, that dorm is connected to another world! Although Tooru doesn’t have a single friend in class, he can always just go to the dungeon to slay monsters and level-up. There, he befriended a slime, a female knight, and even a female sorcerer ♪ Thus, he begins another day of after-school club activities in another world!

1-4) Houkago no Love Call
A high school teacher, Ueda Wataru, was rejected by a person he loved back when he was a high school student and has been timid in love ever since. However, he's now fallen in love with his student's father, Ippongi Kazushi, a Yakuza. Although Ueda knows that he shouldn't be, he's fascinated with the good looking Ippongi's sweet words...

5) A Certain Ordinary Day
High school student Akira is petite and cute and always bullied, luckily his childhood friend Ryuusei is always around to fight for him. Except Ryuusei is a terrible fighter who always loses! Akira loves the fact that Ryuusei always comes to his rescue, so he hides the fact that his delicate body hides super human strength!

6) Sweet Honey and Punishment
Since Childhood, Nobuhira Tatsuyoshi follow Toshitaka like a persistent dog, even though Toshitaka act coldly and even cruelly toward him.

7) Shoshite koko niwa Fuku ga Kuru (And Then Happiness Will Come to This Place)
Two friends in a soccer club share a kiss because of a dare and true feeling of first love are blooming.

A parody of the popular Prince of Tennis series, it chronicles the daily school life of various characters.

"Can you help me paint after school?" asks my classmate Naomi. Our feet carry us to the art storage room that no one goes to. I quietly become her assistant in producing artworks. Naomi suddenly arrived at an Osaka art high school. The pride of the gifted, hardworking Renji gets torn to shreds by her ominous talent. Renji bluffs "I can come up with something like that too." But, he gradually finds himself enthralled by her talent. He writhes in-between his self-consciousness and inferiority complex. Is she his rival or is she...?!
They produce eccentric, sensual works after school.
A striking story of art and youth released by a brilliant newcomer.

Basically a romance between two high school teachers - Kawase Mitsuro and Kazama Toshiaki. Complicated by Mitsuro's hesitation to accept Toshiaki's very open declaration of love. Slightly complicated by a bit of jealousy on the part of Mitsuro's younger brother Hitoshi.

Note: in 2005 the story was re-released in two volumes under titles: "Hatsu Natsu Monogatari" and "Koutei ni Ouka Ranman" by Daitosha with newly drawn covers.

Ebisawa Ginpei is considered a delinquent. But that's not his true nature. (Maybe.)

As he continues his (misguided) quest to learn about himself, he meets his classmate Chigusa Somei (a monster with a desire for 120% approval) and discovers the dangerous depths of philosophy!

The wheels of adolescence are now set in motion for two people with mutual interests...!

An official Mairimashita! Iruma-kun anthology series, featuring stories of Iruma Suzuki and friends's adventures as students of Babyls Demon School.