This shitty world that's nothing but a trashy game, he and I will definitely escape it together.

So, all these annoying women trying to take advantage of him are just a nuisance. What's worse, it seems like he's beginning to have some feelings for them.

That's why, for his sake, I'll eat them up first.

But, just what is this power...?

From Shoujo Sense:

Pinch server Shimodaira Kanna enters high school with the hopes of appearing regularly in volleyball matches even though he sucks at everything aside from serving. The club he enters has three other formidable first years. But that's not all, even the older members look like a strong team. Will he get his chance to shine?

Despite being from a prestigious noble family, Bridget, a failed daughter who made a contract with the weakest spirit, one day had her engagement broken off by the third prince, Joseph.

However, no one sympathized with her, who was acting as a proud daughter at the behest of Joseph... At that time, Bridget meets the Duke's son Yuri, who is feared by those around him because of his overwhelming ability and cold personality.

Two people who hate each other and repel each other. However, the encounter gradually changes their destinies. This is the story of a villainess who is despised for being incompetent and a villain who is shunned for being a genius who eventually fall in love.

Web Novel: https://ncode.syosetu.com/n9923hb/

4-koma about the daily lives of Tooru who has just entered the same high school as her best and childhood friend Run-chan, who is now a second year, and her friends Yuuko-chan (whom Tooru bullies cause they meet under bad circumtances) & Nagi-chan (who watches).

Included is a side story called Days in Junior High School in volume four which tells how Run and Tooru met and their adventures in high school.

A serialization of the story of a mute transfer girl who uses a sketchbook to talk to people, and a bullish classmate with a special ability who befriends her.

The enormous cave system, known as the Abyss, is the last unexplored place in the world. Nobody knows how deep down goes this titanic pit, inhabited by strange and wondrous creatures and full of mysterious ancient relics which purpose in unknown to modern man. Generations of bold adventurers have been drawn by the cryptic depths of the Abyss. In course of time those brave enough to explore the dangerous pit came to be known as "Cave Raiders."

In Oosu, the town at the edge of the Abyss, there lives a little orphan named Rico, who dreams of becoming as great a cave raider as her mother was and solving the great mystery of the pit. One day exploring the murky depths she stumbles upon a little boy, who turns out to be a robot...

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

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!

Girls and sweets are full of secrets!?

Ichise Souma is a high school student who dreams of becoming a pastry chef and devotes himself to making sweets. He meets Satomi Chika, a female classmate, after receiving some sweets.

Chika is a beautiful girl with a soothing personality, known at school as the “Angel of Peace.” Souma thought she was a good girl who would kindly listen to his worries about making sweets, but...

"Ichise-san, your embarrassed face is really cute."

Chika shows an unexpected side of herself only when they are alone, and Souma’s heart is on the verge of exploding! A sweet and stimulating boy-meets-girl story with a mischievous angel connected by sweets begins!

Ura baito, also known as a shady part-time job. A gray area job that pays very well. The price you pay is your life.

Yume Kokuryo and Nagomi Shirahama are seeking a large sum of money for some reason. To that end, they casually dive into various shady part-time jobs.

This work may affect you physically and mentally. Read it at your own risk. We are not responsible for any damage to your health.

The manga centers on veteran novelist Mariko Kōda, who lives with the families of both her son and her grandson in one house. Feeling like she no longer has any place in her home, she decides to leave the house and strike out on her own, beginning with living in a manga cafe in the city.

Tamashiro Neko is a young witch in training, sent off by her parents to finish her studies. In her search for a place to stay, she arrives in a quiet town in the countryside, but then her first trial begins.

Masaichi Mazono, an otaku boy, and Toiro Kurumi, the most beautiful girl in school, are childhood friends.
Toiro, who was always in Masaichi’s room, was supposed to be like family to him.
But one day, Toiro, who was constantly getting annoyed by her romantic troubles, asks Masaichi to play the role of her boyfriend.
They thought it would be simple to pretend to be a couple because they’d been together for so long, but their ideal childhood friend can’t possibly end up as a false lover…
“E-eh no, holding hands is embarrassing.”
A childhood friend who is more than a lover embarks on a more adventurous lover’s life than she could have dreamed!

The war between Idéal, the country of demon race, and Étoile Kingdom, the country of the human races, had been going on for a long time until a peace overture was offered by the demon lord. Following this, the demonic princess, Lieselotte, was married to the Hero, Schmerz and she'll live in the human world as a hostage of sorts. However, this is just Lieselotte's first step toward her ambition, and her future will be full of hardship that she must overcome...

High school girl Sayama Umi is placed in the care of the neighboring Hiroi family while her mother is away on a long business trip. The Hiroi household is home to Shoya, an eight-years-older figure she admires, and Umi's heart races at their long-awaited reunion. But the Shoya she encounters is completely different from the one in her memories...

A faintly sparkling cohabitation story about meeting changed memories once more.

Standing at the crossroads of life; the important choices - “Flags”. Hatate Souta, a young man who can see these flags, transferred to “Hatagaya Academy”, a prestigious school in the metropolitan area. Not only does he meet beautiful girls in his busy school life, he even goes as far as living with them under the same roof! Surrounded by these flags, this enviable romantic comedy begins!

That gloomy girl is so beautiful! Let's aim for it! A school romance comedy together with that reserved, cute girl as we try to stop being loners!

From MangaHelpers :
High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, powerful others in this world aren't as thrilled to have him there, and they kick him to the edge of the world just as Tsukuyomi declares that he must leave Makoto to find his own way. Now it's up to Makoto to find his own way.

Da-in, ended up possessing the villain of a story.

To make Stardust — the story's protagonist and his favorite character in a dystopian manga — happy, he resolves to become the villain Egoistic for her growth.

Da-in deliberately causes terror to enhance Stardust's abilities and preemptively prevents all the tragic events from the original story, but in the process, he gains public support while also drawing Stardust's suspicion.

Stardust, who initially opposed him, gradually opens her heart, and soon even begins to show signs of obsession towards him...?

...You did read the title, right?