"If you blush, you lose."
Living by this principle, the middle schooler Nishikata gets constantly made fun of by his seat neighbor Takagi-san. With his pride shattered to pieces, he vows to turn the tables and get back at her some day.
And so, he attempts to tease her day after day, only to find himself victim to Takagi-san's ridicule again sooner than later. Will he be able to make Takagi-san blush from embarrassment even once in the end?

Note: Won the 66th Shogakukan Manga Award for the shounen category in 2021.

A kouhai confesses to a senpai who doesn't want to date them.

This is a world of magic where magic is used for everything. But deep in the forest exists a young man who spends his time training and bulking up. He can't use magic, but he enjoys a peaceful life with his father. But one day, his life is put in danger! Will his muscular body protect him from the magic users who are out to get him? Powerfully trained muscles crush magic as this abnormal magical fantasy begins!

From MangaHelpers:
From the perspective of an alien planet with super-advanced technology and tiny (1/60th the size of a human) inhabitants, planet Earth was the perfect location to banish their worst criminals. Five of said criminals were sent to the planet to be exiled, attached to little critters like frogs and rabbits so they can never be fully active. Due to an accident, these five criminals managed to escape and attach themselves to five different girls that were nearby. The one responsible for the banishment of these five criminals now must detach them from the girls by mouth-to-mouth release.

Narita doesn't believe in love at first sight, but when he meets a cute high school girl named Tsubasa, he falls for her immediately and even confesses to her. They both decide to start out as friends, but then she comes out and tells him the she has multiple personalities...!?

Toradora!'s story begins with the male protagonist Ryuuji Takasu who is frustrated at trying to look his best as he enters his second year of high school. Despite his gentle personality, he has a natural outer-appearance which makes him look like an intimidating delinquent so he is utterly hopeless about his chances of getting a girlfriend anytime soon, and does not have many close friends either.

After being greeted by his hungover mother in the morning, Ryuuji goes to school and is happy to find that he gets to be in the same class as his best friend, Yūsaku Kitamura, and crush, Minori Kushieda. However, it is then that he unexpectedly knocks into "the school's most dangerous animal of the highest risk level" - Taiga Aisaka - who just happens to also be in his class.

From MangaHelpers:
Hagoromo Maki is going to an all-girls high school, a special one that allows its students to commute by plane. She and her first friend at school, Hasegawa Motoko, have found a plane and fixed it up for themselves to fly! However, it turns out that it was the plane used by a legendary pilot who protected the airspace for their school, and their school's ace pilot does not approve of them having it. Will Maki be able to fly and protect the air for their school?

Hanadera Keisuke is obsessed with yuri, and he's read all the Yuri Hime manga. However, he is sadly aware that there is one thing a lesbian romance absolutely does not need-- him. One day, a student named Akane transferred to his class from an all-girls school. She used to go to school with another classmate, Saori, and Akane immediately tried to pick up their friendship. However, her clinginess, desire for alone-time, and intensity all convinced Keisuke that he was finally seeing yuri in reality! Soon enough, Keisuke had stalked them enough to see a love triangle between Saori, newcomer Akane, and their standoffish classmate Matsuoka. Is there truth to his observations, or is he viewing the world through yuri-tinted glasses?

Note: Comic Yuri Hime is not a seinen publication. It doesn't come under any of the four major demographics.

Rola who had received special education to be a swordsman from her A-Rank adventurer father since a young age, enters the Royal Capital's Adventurer's school at the age of 9. Rola filled with expectation in her heart in hopes to make many swordsman friends. At the day of the entrance ceremony, Rola's sword aptitude value was measured at 107. Between normal students whose aptitude value is around 50-60, Rola was definitely a sword genius, but the magic aptitude that was measured after that was 9999. Rola was stunned, and while she didn't know what was even happening she was transferred to the Magic Department.

Contrary to Rola's will, she exerts her super-genius, and instantly becomes stronger than anyone in the school.

The romantic comedy's story begins when the pretty, mild-mannered student council president announces a new dress code regulation, "underwear is now banned."

Hoshino Star, a male high school student who lives leisurely in the countryside, has a unique power—that is, being able to get along with any animal! Although Hoshi spends his days feeling supreme joy in interacting with animals, on the other hand, he also has a great dislike of humans. Kirari Yozora, a childhood friend who struggles with her extreme personality, suddenly thinks one day. ──What would Hoshi think if there were animals like humans?At that time, a mysterious object comes flying with a roaring sound. Appearing from the other side of the dust cloud is the most terrifying and worst visitor with cute fur ears and a tail. A genius tamer VS greedy kemomimi unfolds in this relaxing erotic comedy!

Everything that happens in the world is settled through games.

Oda Teruasa is a high school student gifted with intelligence, good looks and wealth, making him the "perfect scion" of the Oda Group: a powerful conglomerate whose name is known all over Japan. But then he gets caught up in a nightmarish game of winner-takes-all against the son of the Belmont mafia family...

While visiting her future high school, Osanai Mini instinctively interferes in a conflict between two strangers. Just when she's about to be in danger, a handsome boy swoops in and rescues her, leaving only a small handkerchief behind. Spring arrives and Mini recognizes the boy who saved her at her new high school. Despite her confusion about what love means due to the scars of her past, she finds that she is drawn to him in a way she's never experienced before. What kind of relationship will these two develop? A sweet story about young love begins!!

Kyouko Mogami lived solely for her childhood friend Shoutaro "Shou" Fuwa. She follows Shou to Tokyo so that he may realize his dream of becoming a famous singer. When his dream is realized, Kyouko overhears the truth behind his decision to bringing her with him: he was using her as a maid.
Shocked and enraged, Kyouko swears to take revenge by outdoing him in show business. With a new look and a new attitude, she joins LME, the agency where Ren Tsuruga (Shou's rival and the #1 actor of LME) works, in the hopes of achieving her goal of destroying Shou's pride.
Along the way, she discovers her true self, makes new friends (and enemies), and finds herself at the heart of some interesting situations that will change her life, and the lives of all others involved, forever.

There's this beautiful, bubbly, film-loving girl who's three years older than me: her name's Shia, and she lives right next door! I'm madly in love with her, and I needed some way to see her! I settled on asking her for movie recommendations, and now I get to meet her every Wednesday! I want to know more about her, and tell her how I feel... but I just can't get the message across! Enjoy this lopsided rom-com brought to you by the author of "The Girl I Like Forgot Her Glasses" and "Paper Braver", Koume Fujichika!

Yuzu Itou, a transfer student, is filled with uneasiness. In her loneliness, two kind-hearted girls called out to her: Akiko-chan and Ukippe.

"I made friends!", she thought happily. However, it turns out that the two seem to be rather shady...

This is a comedy of these slightly precocious primary school students, of their cutely idiotic everyday life.

A violent and muscular boy who dreams in becoming a national champion, unexpectedly turns into a cute girl, how will “she” achieve “her”dreams?

The largest rise of Dark Skin Gyaru's of this century! The start of high school life with best and strongest girls out there!! High School Teacher Imada Sasamichi has been assigned to work there at this school, only to find out that everyone in the class is a dark skinned gyaru!!!! Kuroi, Kuroiwa, Kuroiso...all the names are Kuro (Black)!!! Meanwhile, Kuroi Mariko already fell in love with her sensei...!? It's the start of these lust-filled girls straight love-attacks on Sensei's life!

From NHFH Scanlations:

Sakurako Kawawa has moved into a boarding house to attend high school, excitedly waiting her first meeting with her new roommate. And who should arrive at her door but Kasumi Yamabuki?
Kasumi is absolutely stunning, but she marches at the beat of her own drum. Her carelessness awakens the "big sister" inside of Sakurako.