A unicorn turns into a human in order to watch TV and sees something on the news that unicorns are going extinct so he decides to finds some more unicorns to have some babies.

The manga of the popular Light Novel series of the same name: Sisti attends a magical academy to hone her skills in the magical arts, and hopes to solve the mystery of the enigmatic Sky Castle. After the retirement of her favorite teacher, the replacement, Glen, turns out to be a tardy, lazy, seemingly incompetent bastard of an instructor. How was it that Glen was hand-picked by the best magician in the academy!?

I, Hayato, once met an Oni princess when I was young, and I made a promise to marry her when I became eighteen. But after that day, I was predisposed to experiencing ecchi disasters whenever I touch women. With the cause unknown, I intended to live out my life in high school without ever finding a girlfriend. But on that faithful day, Sakura, the Oni princess grown up, came back as promised.

This is the tale of an Oni Princess x High School Boy and the mystery of the ecchi Curse Charm that circles them.

"I want my little sister to eat a cake!" Minori, a male college student, decided to work part-time at a super popular cake shop with that in mind. The shop is located inside a school for young ladies!? Can a boy bad at communicating, who can't even look straight in the eye and speak properly run a cake shop with four JK patissiers? Enjoy a teen romantic comedy sweeter than a cake♪

From MangaHelpers:
Akutsu Takuma wants nothing more than to be left alone, to live and study in peace. He has a terrifying face, which has prevented him from making friends and earned him the nickname "Akuma" (devil). However, he is satisfied with being alone and spending all of his time learning, hoping to become the good person his late mother saw in him.
All of this changes when he gets involved with the nine Saotome girls, who are Valkyries. Takuma is called by Odin to pair with them to protect the world from demons and the threat of total destruction. The Valkyries' power comes from love, and so now he must live with them and try to become closer to them. To start with, they prioritize his intimacy with the strongest Valkyrie, Natsuki. Will he and the Saotome women be able to save the world?

In the year 20XX.

Despite the fact that the citizens are monitored by IC chips, making the identification and arrest of criminals easier, gruesome murder cases targeting children by an unidentified serial killer are occurring all over the country.

Clad in a black cloak and a clown mask, a deranged serial killer known as the 'Murderous Clown' who poses 'questions' to his victims — the battle between him and the police officer, Yuuto Asakura, begins!

From MangaHelpers:
This manga is related to the "Date A Live" novel and anime. It features members of the AST (AntiSpirit Team), a special squad devoted to fighting spirits. Okamine Mikie idolizes her superior AST member, Tobiichi Origami, and may be in love with her as well. Unfortunately, Origami seems to want nothing to do with her. One day, they end up heading toward an explosion that wasn't caused by a spirit. Instead, it was caused by a girl named Ashley Sinclair, who transfers to their school shortly after the incident!

"Guest House Yadori" is a seaside inn with a view of the Pacific Ocean.

A 34-year old tanned gal is the proprietress who runs the inn. In an unexpected turn of events, a university student named Youichi Sakimori ends up freeloading there. The playful and alluring proprietress Hana Yadori has him dancing in her palms from morning til night...!?

(Source: Grand Jump)

Meet the adventuring school's highest honour student, Touru. Once he got to study abroad, he had a reunion with his childhood friend Nikka. However, what he thought was a girl as human as he was, she was actually a giant of the ogre lineage! Everything is mega-sized in this city of giants. His childhood friend is 100cm taller than him. Somehow his classmates are only girls. Even though he doesn't mean to, miniskirts flutter all around him. Brandish your sword and sorcery in this school-life harem story!!

Raito Sasaki is your average gamer, but he wants to be one of the best. So he decides to spend his money on a Trainer, Little did he know that his coach is a gyaru gamer gal! Will our protagonist be able to concentrate on the game?

Series on Pixiv: https://www.pixiv.net/user/6015940/series/101183

Meet Sefiria. She may be just a baby now, but she holds a dangerous secret — she has memories of her previous life as a Japanese salarywoman. Anyway, yadda yadda yadda, she died, got isekai’d, bada bing bada boom.

Now for the meat and potatoes of things. After experiencing the hell of living in such a rigid society like Japan beforehand, Sefiria wants to avoid making that same mistake in her second life. That’s when she remembered a famous saying back in her previous life:

“At ten years old, you can be a prodigy. At fifteen years old, you can be a genius. At twenty years old, you’ll just be a normal person.”

While the new world she was born in considers adulthood to start at the age of 15, Sefiria has a repository of knowledge from her old life to help back her up. Can she become a prodigy at an early age, revolutionize her world, and ensure herself a slow life that any Japanese reader would love to self-insert into?

Being honest is good. Probably.

With Shuuji’s parents overseas on business, a maid has come to his house. She’s cute but she can’t keep a secret?! With her expressionless gaze, she thoughtlessly says the craziest things…! Living with this maid whose true thoughts are laid bare, a second year high school boy is thoroughly made fun of!

Tokonatsu Taichi took the summer Koshien by the storm as a sensational ace pitcher, with a full arsenal of pitches including a 98 mph fastball. But on the way home from the game, the team bus suffered a tragic accident and Tokonatsu Taichi lost his life... Only to be transported to a new world where all international conflicts are resolved by a game of baseball. Unfortunately, the country he landed in was the weakest, and had seen gradual loss of its resources and people to neighboring countries. Can Taichi turn their fortunes around?

Meguru Kaku is a normal high school student, except for the dreams he has about his previous life. One day, an unseasonal new student, Kotaro Kongochi, arrives. He is reunited with a friend from his previous life that he thought he would never meet, but something is wrong with him...?

The series ran in Weekly Shōnen Jump from 1988 to 1990 as Jungle King Tar-chan, and then from 1990 to 1995 as New Jungle King Tar-chan. It first appeared as a short prototype story in the 1986 Autumn Special as Tar-san (ターサン?).

At first, the series was a simple gag manga parodying Tarzan with single chapter adventures. At this time most chapters were only 7 pages in length and were usually about Tar-chan protecting the peace of the jungle, Jane, and his animal friends, often with comedic results. After Tar-chan began, Super Jump became a monthly publication, and Tokuhiro ended Ken-chan and Chako-chan in 1990.

Two years into serialization, the stories began to run 13-15 pages, New was added to the title, and the simple episodic gag premise were switched to a fighting manga premise. Although long battles and emotional development began to unfold, after the end of these battles, the series would return to its gag style, switching back to the fighting manga style with each new battle.

Although the story is called Jungle King Tar-chan, Tar-chan and his friends actually live on a savanna, and a jungle setting is never actually used.

Reiji Hashimoto, the clear-headed, ruthless protagonist who is extremely strict with arrogant women, hates his classmate Mikage Yakushiji, a typical arrogant girl. However, Mikage is a normal girl who is just in love with Reiji!!

A new romantic comedy depicting the quiet struggle between two people who don't understand each other!
(Google translate, edited)

Not a man is immune to Mikudashi Ibari's beautiful looks and perfect style... safe from gloomy loner Yonekura! A love comedy about a beautiful girl ruined by a problematic personality trying to prove her superiority through sexiness to a gloomy boy!

A salaryman gets a catgirl visitor from another world, and bullies her with his culinary skills.

A boy has become a magical girl, Kazana Sho is going to become more feminine to get stronger...

Mimiel, a mysterious girl who fell from the sky, is taken in by Ren, a high schooler. She claims to be a fallen one-winged angel, stripped of her angelhood due to her inability to love humans. Ren decides to begin living with Mimiel until the day she knows love and is able to go back to heaven once again.