Ane (Older sis) is uber perfect; she’s beautiful, intelligent and is admired as the president of the student council. But, when it comes to her little brother, she goes nuts, unable to control her over-the-top obsession with him. Their days get even more chaotic surrounded by a bunch of oddballs, from a mentally-disturbed best friend, their little sister with a sister complex, an ex-punk convenience store manager, a hardcore masochist, a loli-con and more! Casual comedy perfect for filling your spare time.
-jCafe24.net

Alvis, the hero, lost his life in a battle with the Demon King. However, he lived on... as a skeleton!?

Ending his career as the hero who defeated the Demon King, he spent 3 years sleeping, playing and enjoying every day. However, in order to find his long time friend, Izana, he once again enrolls as an adventurer, and changes his name from Alvis to Al the Skeleton. Due to his appearance being that of a skeleton, trouble is not out of the question for his near future!

Protecting travelling merchants, mapping unexplored dungeons and so on; whilst undertaking numerous requests, Al the Skeleton wields his sword another day in order to save lives.

Sawari likes to harass her childhood friend, Kiyoto. Sexually.

Leader of hero squadron "Gerato 5 (Five)" aiming for world peace, Aikawa Fudou and fight leader of secret society "Gecko" aiming to conquer the world, Magahara Desumi ... there was a deep “fate” between the two of the organization ... !!

Mitsuru Masamune, a mild mannered high-schooler who hasn't had much of a presence since his birth one day had a roommate move in.
A silver-haired, blue eyed exchange student all the way from Germany, Leo.
They had a dignified appearance and had a cool way with their words with no room for timidity.
He used to think that Leo was a being far off from someone like him till he got to know about a secret of his after which their relation got a bit more special...?!

This is a work that depicts the 10 days until the heroine "Kurusu" who has never fallen in love before, falls in love and becomes Menhera.

Eight years have passed since they promised the witch to keep loving each other.
A little naughty love story where adolescent childhood friends secretly observe each other.

The succubus' target was a second grader!? So begins a seductive comedy with a clumsy succubus and a mature grade schooler!

After years of being unlucky with girls, Ishimaru Daito only wishes to enjoy his high school life with a normal, cute girlfriend. However, after losing a game to his two new seniors Sasahara Kiyoka and Tomochika Asami, he is forced to join the < Humanism Studies > club which is actually a torture studies club. Will Ishimaru get the normal high school life he always wanted?

From MangaHelpers:

The age of the maid robot has begun! Now, each family has at least one maid robot in their household, and Souta's family is no exception. Souta grew up with his maid robot since he was a young boy. He has learned that there are people out there that have fallen in love with their maid robot, but he is determined to not be one of those people.

His maid robot, Tsukushi, will do whatever it takes to make her master happy!

A romantic comedy given by the sword of the evil!! The secret of Hikari, a student council president who has excellent grades. That cannot be changed because of their illness. The hero who knew it had to help her change!

Yonaga-kun, a second year high school student, has someone on his mind. His seat neighbor, quiet and tidy Nemukata-san. He loves seeing her glimmering eyes through her glasses as she reads a book. However, one day he finds that same girl trespassing in his room as "Dorobou-chan"!?

A bright, fun, and not quite criminal, romantic comedy ★

(Source: Shounen Magazine, translated)

Humanity's greatest gym rat Hansol, lost consciousness during a deadlift. When he opened his eyes, he arrived at a different world. Monsters appeared in front of him, and all that he could see was protein...? "I'll flip this world by working out!"

After Rimuru's encounter with Shizu-san in the manga, he learns how to mimic a human form. However, the body...was that of a three-year-old child!? With chibi-Rimuru and his friends unleashed from the Great Forest of Jura, maternal instincts hit in the “Tensei Shitara Slime Datta Ken” Official 3rd Spin-Off!

Hitoshi Kobe is a terrible student and an even worse athlete ... though he does have an incredible talent for creating Artificial Intelligence programs. Thirty is his best artificial intelligence program yet -- and, more important, the only girl who will talk to him. Hitoshi's life is forever changed when a freak accident brings Thirty to life ...

Three Years ago a Hero sealed a Hell Gate. The Seal has been weakening ever since, sporadically letting Monsters through. After a big Group of Monsters entered the Country through a Hell Gate, the profession of Heroes was needed again.
Touka Scott a small Radish Farmer in the southern Town of Cheza is prepared for sudden Monster Attacks. He built himself a hidden Pittrap with Bamboo spikes, to lure unsuspecting Monsters in if they ever try to Attack the Village. A Monster attacks and Touka tries to lure it into the Trap with freshly roasted Bacon, but the Monster dislikes this type of Meat. Thankfully the local Hero saves the Village from the Monster in the nick of Time. The hungry Hero tries to grab a bite of Bacon after vanquishing the Monster, only to stumble into Toukas Pittrap and Die.
After causing the local Heros Death, Touka is forced to take matters into his own Hands to protect the Region from attacking Monsters.

Wang Yi’s only an unremarkable loser, but he actually possesses an unparalleled ability that even he did not know about —— As long as any spirit monster (demon) touches his blood, they’ll be instantly annihilated! Let’s see how this good-for-nothing loser becomes god!

Lux, a former prince of an empire named Arcadia that was overthrown via a rebellion five years earlier, accidentally trespasses in a female dormitory's bathing area, sees the kingdom's new princess Lisesharte naked, incurring her wrath. Lisesharte then challenges Lux to a Drag-Ride duel. Drag-Rides are ancient armored mechanical weapons that have been excavated from ruins all around the world. Lux used to be called the strongest Drag-Knight, but now he's known as the "undefeated weakest" Drag-Knight because he will absolutely not attack in battle. After his duel with Lisesharte, Lux ends up attending the female-only academy that trains royals to be Drag-Knights.

From Seven Seas:

An Inukami, a sacred being with a dog-like appearance, forges a contract with a powerful human tamer to help them eliminate evil monsters and demons.

Though Kawahira Keita is the descendent of a long line of Inukami-tamers, he seems to lack the necessary ability and has been forsaken by his family. One day, he meets a cute Inukami named Yoko, who, at first glance, looks graceful, obedient, and beautiful...but upon forging a contract with her, Keita discovers that Yoko is a wild and mischievous Inukami that no one has ever been able to control.

Usami Nagisa is a yankee who suffers from a rare disease which causes her health to decline if she feels lonely. Sewa Natsuhito, the boy who sits next to her in class realizes this and keeps her company, but the only way Usami believes she can cure her illness is to make lots of friends, a process she might find harder and complex than she initially would have hoped.