Shuuma Aguri isn’t like other high school boys. He doesn’t get into sexual talks with his friends, and he sits alone. While he does have a secret fetish, he keeps it to himself - after all, who would willingly talk to a guy with a tickle fetish?

The only solace he has in his life is Anzu, a girl he met online who herself has a desire to be tickled. The two decide to meet up one day, only for Shuuma to find out that Anzu… is actually his teacher, Maiko Ogura?

From Paperdolls Project:

Nonoyama, whose only friend is a stuffed animal, spent her elementary and junior high school years as a true truant because of neglect and bullying.

Now having the chance to reset her life as a high school student in an out of town school, she's determined to make friends and enjoy her school life! However, her high school life is a rocky road from day one...

Uichiro, a junior high school boy, harbors a secret he cannot share with his childhood friend, Tama-chan. He has been cross-dressing for her because she has a phobia of men. This is a thrilling yet agonizing comedy about a boy who cross-dresses for the girl he loves!

Eiyuu (A.U.), a high school boy, has a problem! Two childhood friends "Shio" and "Akari" who go to the same high school are too cute! If they find out that I'm the only one looking sexually at them now that they've grown up, even though I have no intention of doing so... that would be too much! On the other hand, the two childhood friends also have their own secrets...? It's so awkward! It's complicated! But childhood friends are the best! A sweet and impatient love triangle love comedy where you can't be honest!

A high school boy is secretly cheating on his new cute girlfriend with another girl who likes to lick sweat off his body.
To you who have tongue licking and sweat fetish, this series is perfect for you

Losing one match after another, shogi prodigy Yuhi Ninomiya became a shadow of his former glorious self. It was then that he faced his old rival Kanata Kuji in an official match. However, the record-setting match ended with Kanata winning his 27th consecutive game, and Yuhi losing his 17th consecutive game. Feeling frustrated and depressed, Yuhi stops by a bar, when he has a fateful encounter with a certain girl! Her name is Tsuki Kayamori. Although she is overbearing, self-centered, and eccentric, her sharp and unorthodox playstyle is as if she was chosen by the shogi God!

(Source: K Manga)

Souji Enishiro, 15 years old (high school dropout), is a controversial streamer, "Aoringo," who makes a ton of money through his violent and outrageous video content. Although he is seen as a troublemaker, in reality, he is a kind older brother who loves his younger sister and sweets. Even his controversial videos are just a means to cover the huge medical expenses for his sickly younger sister. No matter if everyone in the world hates him, he is happy as long as his sister is doing well. That is until something happens to his beloved sister...

A prodigy of science and a solitary genius—yet terrible at so many things!?

Poor university student Sanosuke Saraki unexpectedly reunites with his admired genius classmate, Koharu Kobachi, at his part-time job back at his old school. However, this supposed genius is now a "5th year high school student" who has repeated her second year in a row...! Saraki's mission is to "make Koharu graduate by the end of the year."

One day out of boredom, Tanaka decided to give her classmates nicknames based on their quirks. Her friend Sakuchi became “Ota” for her nerdy interests, and her other friend Saginomiya became “Robo” because of her expressionless personality. In retaliation, her friends decided to name Tanaka “Baka”. These are the ridiculous days of three high school friends claiming (or not) the height of their youth.

Park Hyung Suk, overweight and unattractive, is bullied and abused on a daily basis. But a miracle is about to happen.

Uichi was once popular, but now he is being bullied excessively. Then suddenly, his first love, Yotsuha, appears in front of him. What is this cute and brave girl's purpose...?

Aijou experienced 100 heartbreaks during Junior High. While praying in a shrine, the God of Love appears, saying that Aijou will meet 100 fated girls. If their relationship with him fails, all the girls will face an accident and die. Now it's a matter of love or death, and it's up to Aijou to decide.

Necromancers have built a name for themselves as fearsome practitioners of magic capable of dropping entire empires to their knees. Simon Follentia is a necromancer with incredible latent talent! After being scouted for the necromancer's academy, this genius is ready to be nurtured and taken to the next level. But could Simon's insane talents attract some unforeseen consequences?

From Dynasty Scans:

10 years ago, high-school student Sanpeita dreamed he was engaged to a beautiful girl. One morning, an unknown homely girl suddenly pressed him for marriage. The homely girl was named Kemeko.
In order to escape, Sanpeita left for school where Kemeko followed and showed up with an uproar. A larger disturbance was when Sanpeita was targeted by a rice cooker on the school's rooftop.
As Sanpeita and his childhood friend Izumi were being attacked by the rice cooker, Kemeko saved them both. What is the girl's true shape!?

Minato Seno, who has always been very shy since he was young, struggled to make friends during his first few days of high school. He also never got a glimpse of his classmate Nekozane-san's face, as she was always asleep at the desk next to him. However, one day after school, a chance encounter revealed a side of Nekozane-san that was completely different from the one Minato knew in the classroom.

A new teacher is assigned to Momotsuki Academy. Her name is Rebecca Miyamoto, or Becky. She is short, but she is pretty smart. This is a school comedy performed by Becky and strange students... and animals!?

[That girl is cute…but dangerous] The girl sitting next to me at the start of the new semester is the rumored Jirai girl… but… is Chihara-san really the [Jirai] that everyone says she is?

Hatori is an average teen boy with no passions in life. One day he meets Furuta, a girl with a keen eye for the extraordinary that's hiding in the streets where they live... Small wonders can change the world in this (extra)ordinary coming of age series!

Satou Koharu is a pretty girl that everyone can recognize.

But her attitude with anyone is so bitter that she got nicknamed “Salt-God Sato-san". Anyone who tried to get close to her got emotionally injured in a brutal way.

Though for some reason, I was able to save Sato-san from some pick-up boys where I was working at. Which made her like me, and thus I became a friend of “salt-god Sato-san.”

In front of everyone, she is a salt-god, but in front of me, she is very sweet. This is a high school life story between Satou-san and I.

Web Novel (Raw): https://ncode.syosetu.com/n1912fp/
Author's Pixiv (Pixiv): https://www.pixiv.net/en/users/4770132

I possessed a third-rate extra villain character in my favorite game. I have no ambitions and I just want to live a quiet life. But sheesh, this world is a hard place to survive in. I will survive to the ending of this story, in a way the protagonist cannot. I will survive in the way of a third-rate villainous character.