Despite the title this manga has nothing to do with sex, just young people rebelling against the world.
The manga is about the adventures of a girl, Kaho. In the first chapter she goes on holiday to Okinawa and starts following around Yuki, a car-stealing punk.

Nomura Nobuo was a normal highschooler, until his "gift" convinced him of his separation from the masses. When his gift is unmasked by Kaburagi Jirou, it marks the start of a war. A war on society itself. The War Front: Spike Hills.

Nanako Kobayashi, a 17-year-old teenager, has an ugly face who seems to not have a care for the world. One day, she got a call, only to be given two choices to answer a question. A devil suddenly appears, taking the form of her teddy bear. The devil is willing to grant her three wishes; each based on two options; What wishes will Nanako choose?

[From Ushi]:

"Once upon a time I dreamed I was a butterfly,
fluttering hither and thither,
to all intents and purposes a butterfly.
I was conscious only of following my fancies as a butterfly,
and was unconscious of my individuality as a man.
Suddenly I woke, and there I lay, myself again.
Now I do not know whether I was then a man dreaming I was a butterfly,
or whether I am now a butterfly dreaming I am a man."
-Chinese proverb from 3rd century B.C.
(Zhuang Zhou Meng Die (庄周梦蝶 ))

In the feudal era of Japan, Ogami Itto is the elite executioner for the Shogun until the ruthless Yagyu clan frames him in an attempt to gain the position. His name dishonored and his wife murdered, Itto and his infant son Daigoro wander Japan as an assassin for hire, named Lone Wolf and Cub. Ultimately, Ogami Itto strives for revenge against the Yagyu clan.

Mina, a Lieutenant of the Space-Time Vanguard Unit arrives from the distant future to interrupt Ichikawa's peaceful life with some upsetting news of how the world would end-up if he continues to pursue his affection about his little sister. The sound of the grim news doesn't seem though to deter Ichikawa resulting in Mina having to take any and every possible action to convince and if necessary seduce him!

In a place called Polyphonica, humans and spirits live side by side. Young musicians create magical sounds with their music, which bind the spirits to them.

A struggling student named Phoron accidentally summons a spirit he met in childhood but later forgot about. Phoron could use all the help he can get, but this feisty spirit may prove to be more than he can handle!

The devastation caused by the Kantou Hell Quake sunk the buildings in the center of Tokyo deep beneath the waves. A great number of human lives and and a great deal of property sunk along with them. There's no shortage of people aiming to claim these sunken valuables. Many of those people are pirates, who arrived from overseas in salvage ships of unknown nationality. Every night, these pirates raid the chain of small islands, which all that remains of the Kantou region, and assault the survivors.
However, there was no one who was able to stand against the pirates! It was a completely lawless zone. It was Japan, but not Japan: A land and a people completely forsaken by their country.
That is, until Violence Jack rises from the ocean to help the islands' inhabitants fight the pirates and their allies, the New Shu Army.

From Wiki: Sensoron is a controversial series of manga written by right-wing Japanese manga artist Yoshinori Kobayashi.

For a critique click here

While Professor Saotome completes his masterpiece, the Shin Getter Robo, a strange object enters the Earth's atmosphere. Hayato, in control of the lab while Saotome obsessively works, orders Getter Robo and Getter Robo G to launch and destroy the object before it impacts.

After years of frustration, Kim Gidoo is about to have his first time with the girl he loves.
But then, he's kidnapped by a group of suspicious people, and learns that he's to become a hero thanks to his super-powered sperm...

Long ago, the cherubim Lucifer turned his back to God and waged war with His angels...
...but in the end, he was slain and his army scattered to the winds.
Six thousand years later, Lucifer has been reincarnated in the body of a young child... and it's only a matter of time before those memories of the past war awaken and the world is once again thrown into chaos.
Anticipating this, a single angel volunteered to be sent down to prevent the resurrection before Lucifer's minions find their leader...
...thing is, Lucifer reincarnated as a sweet, ditzy little girl, who wouldn't hurt a fly.

Sennoki Kentaro thinks of himself as a would-be novelist but is actually a NEET living at an old house belonging to his family in Tokyo. By refusing to visit his grandparents' village to participate in a festival he angers a certain Shinto deity.

The kingdom of Sergei has a problem. The creatures of darkness known as Phantom Beasts have been appearing with increasing regularity, and attacking the populace.
Allemande, the Second Princess of the kingdom, has been tasked with keeping the peace. In addition to her impressive skill with the sword, she can also use her talking teddybear partner Maro to summon her own Phantom Beasts when things get too rough.

A boy trying to commit suicide finds a zombie girl that tries to stop him from killing himself.

In this story set in the early 1980s, a young man dreams of becoming a renowned comic writer in years to come. His name is HONOO Moyuru. He has no money, only a dream. Then, he feels overwhelmed by his lack of ability, and buys some sake, although he has no head or stomach for alcohol. This is a tortured elegy for any dashing young art student who spends his days careening around in burning ambition. Note: Was nominated for the 3rd Manga Taisho Award in 2010 and for the 19th Tezuka Osamu Cultural Prize in 2015. 

A strange phenomenon where one is transferred back to the moment right before something life-threatening occurs. This continues to happen until the cause of the threat is erased. It is as if somebody is forcing Satoru to stop it from happening. Then one day, everything is changed. What truths are revealed when Satoru comes face to face with his own past? How will they affect his future?

Boku dake ga Inai Machi: Re (Gaiden volume) is considered volume 9 of the series

Note: Was nominated for the 18th Tezuka Osamu Cultural Prize Reader Award in 2014 and for the 7th, 8th and 9th Manga Taisho Award between 2014 and 2016. Also nominated for the 40th Kodansha Manga Awards in 2016.

Shino-chan can't say her own name. She made the first friend after entering high school. Communication full of clumsiness begins. They always find right words belatedly. But the Seishun can even turn a klutz into a star...or not?
[description on batoto]

About a girl with stammer aggravated by social anxiety, and her early days in her high school class.

A series of rather comedic stories about an eponymous bar, its owner, two regular patrons, and the oddballs that stroll through its doors.

Mizukami-sensei tells the story of his life as a Mangaka!! An autobiographical "column manga" in which Satoshi Mizukami (author of Hoshi no Samidare, Sengoku Youko, Spirit Circle and more) recounts the beginning of his career as a mangaka. 

'You can choose your parents?' The life adventures of a kid who became a golden spoon.