Satan Rchimedes returns to the earth after being sealed for one thousand years by a hero. The King tries to seal Satan once again by dispatching descendants of the hero. However, it's troublesome to find the genuine descendant, so the king chooses 75 hero-like people. This is the adventure of Alba, hero no.45, and his monitoring fighter Ross.

Hoshiro, who had studied earnestly in order to impress girls with his brains, ended up in an all-boys high school! Now what? Well, it's off to the school's legendary wish-granting Tanuki Statue to pray for love! But what happens when his earnest wishes are overheard by the school idol?

From xiaojiangworld

Hibi starts working at his old school as a librarian and reunites with his former senpai, Sugino, who's now a teacher there. Although he confessed to Sugino in high school, he was told that his feelings were a misunderstanding and that he didn't understand the feeling of 'like'. Even so, Sugino now says that he likes Hibi. The feelings Hibi has for Sugino now is no longer love- it is hatred...

After alien technology falls to Earth and humankind uses it to develop giant robots with applications in industry and security, Japan and other countries create academies to train students to use them. An aspiring robot pilot, Maki Natsuhito, tries his best but his prospects in the field look dismal, not helped by the fact that his crush, Asato Kana, is one of the school's aces.

Everything changes with the arrival of Fishes, a mysterious smiling girl who offers Maki the power to fight a new alien threat, but who exacts a heavy price on the exchange. Now in possession of abilities others could only dream of, Maki will find that the idea of a hero is very different from practice.

From Chibi Manga:
Morimura Nobara, 15 years old. Because of a fall from the cliff three years ago, she can hear the voices of animals. Once she got used to it, she notices that there's a guy's voice that says 'I can hear you clearly'

A collection of horror/fantasy/supernatural-themed oneshots.

A mysterious painting of woman arrives at the antique shop Rose.

There is a certain restaurant in one corner of a shopping street near the office district. The historical restaurant, marked by a sign with a picture of a cat, is called "Western Cuisine Nekoya." This restaurant looks completely normal through the week, but on Saturdays, it opens in secret exclusively to some very unique guests. During these hours, doors in various areas of a parallel world open to allow customers of many different races and cultures into the restaurant. This "Restaurant to Another World" and its food hold an exotic charm to these highly diverse customers. This is a story of the heartwarming, once-in-a-lifetime encounters between our reality and another world, between the restaurant's customers and its owner, and the food shared among them all.

Note: Based on the eponymous light novel by Inuzuka Junpei.

One day, Kyouji Himuro hears a knock on his door. Opening it up, he finds that he is transported to another world. But his new life is not good. He has no fighting skill, no money, and no way to make food. While dumpster diving, Kyouji discovers seeds and comes up with a plan to grow his own food. However, his plans change when he realizes that these seeds grow monsters...

Inuwashi Momo, a lovely and delicate girl living with her handsome brothers who dearly take care of her since their parents death. Of course, she loves them... maybe too much...
In order to protect her kingdom, Momo acts lovely, puts GPS to track them and does whatever it takes to get rid of girls interested in her brothers like a soldier. But one day, Momo meets a boy who wants to overthrow her perfect kingdom !

The sad growing-up story of a pair of orphans dependent on each other. "I want to protect you forever and ever, because we have no other loved ones in this world"

From honyakusha:

By coincidence, college student Morimoto reunites with his former teacher, Jinno. After having a meal together, Jinno is touched by Morimoto’s home cooking, and they end up eating together almost every day! However, sometimes when they’re enjoying their meals, Morimoto will have a sad look in his eyes. Jinno may have forgotten, but he’d dismissed Morimoto’s confession in the past…

Eyden L. Schutzer always had a passion for art. He enjoyed his peaceful life as an art school student in a town filled with life and beauty. But everything changed when the Sky Golems--mythological creatures of destruction--appeared without warning. The Sky Golems unleashed a storm of thunderbolts and destroyed the town, along with Eyden's days of peace. One year passes; Eyden is now suffering from depression after witnessing the fragility of the world. Desperate to rekindle his passion for art, he wanders around a town's landscapes and finds Dakini, a mute girl who carries a wooden sword around her waist. Eyden's meeting with Dakini will change his life forever.

An Otaku programmer who spent the last three years creating the world he desires on the computer suddenly encounters a BUG. He gets depressed and sleeps. When he wakes up, he finds himself in his own world with healing power.

Because he did not pass his college entrance exam, Kagami Kyosuke cannot stay close to Kojo Hikari, the love of his life. So instead he gets a part-time job near her university and buys an old camera since Hikari is passionate for photography. But as it turns out, this camera also possesses a secret which will get him involved in all sorts of embarrassing and awkward situations, especially with Botan Oshikiri, his senpai and co-worker. How will Kyosuke's life play out now?

In the whole world there lay a mythical creatures which have their own ecosystem and can’t be considered part of the food chain. They also have supernatural powers and live together with humans. Ferry is one of the professional investigator, who researches the connection between the creatures and humans and is called a Genjuu Chousain (Mythical Beast Investigator). The story starts when a flying reptilian dragon (Wyvern) is attacking a village, and a Girl dispatch on the quest to research and investigate Wyvern and other mythical creatures.

Fate/Grand Order tie-in webcomic

A dragon's hormones are not a trifling thing. Siegfried rolled a 20 for a chance to defeat the dragon (who was hunting for a mate) and accidentally hit the dragon with {Charm}, next thing you know they are married.

Mika Kamiya is a young woman who is a "magic printer" - that is, she helps to create grimoirs and other mystic books which witches and wizards can use. However, she cannot use any magic herself. Desperate to find a spell which can send her back to her home world, Mika decides to create a COMpetely magIcal marKET, where magicians can trade and show off their creations.