From Aerandria Scans:

The beautiful singer Lucille and his orchestra invite you to the city of fear where puppets hunt down humans. The puppets are playing an oratorio of magic and illusions!

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This manga also features the unrelated short story Camelot Garden in vol. 5.

Contains the original oneshot Umwelt
A genetically engineered girl escapes from her home and the doctor that created her must pursue her with the help of military personnel.

Kogane Kokoro wanted to reach out to someone in need in the train but was unable to do so. Then a mysterious old man appeared and took down those goons with his swift movements. Impressed by the heroic appearance, Kokoro decided to become stronger. He became the disciple of the old man and started learning fencing.

Quinta is an infamous grand witch who has lived over 300 years and is known for her cruelty and killing other witches. She's shrouded in mystery and secrets, but the truth is, she's actually only 16 years old. In an unexpected turn of events, Quinta becomes a bodyguard for Nestor Gilroy, a renowned professor with 5 PhDs, who is being hunted down for his unpublished research. Together, Nestor, Quinta, and her animal companion Feeyo embark on a journey in order to have Nestor's results published.

A collection of stories inspired by Grimms’ Fairy Tales.

Story 1, G's Diary: A girl with no memory of who she is spends her days working in a house she has no memory of entering.
Story 2, Frau Trude
Story 3, The Summer and Winter Garden
Story 4, Little Red Riding Hood
Story 5, The Frog King or Iron Heinrich
Story 6, Little Brier-Rose
Story 7, The Bremen Town Musicians
Story 8, Rapunzel.

Izuna has been living the life of a double, devoting it to represent Princess Kisara of the East country, who has always had a very weak health. Even within the East country, a very few within the Royal Palace knew about Izuna's real identity. And the only one who called Izuna by her real name was the real princess.

Izuna's time of serving as Princess Kisara's double was supposed to come to an end once it was decided that Princess Kisara would be marrying to the Crown Prince of the West country to bring peace between the two countries. However, just a few weeks before the marriage ceremony, Princess Kisara's health suddenly turned worse. The Princess realized she had failed to set Izuna free of serving a life of a double. She apologized repeatedly at her deathbed, leaving the two countries' peace on Izuna's hand.

Now Izuna will probably have to lead the rest of her life as Princess Kisara, marrying a person from the enemy country. She vowed to fulfill her precious Princess's dying wish. However, she vowed never to fall in love with her future husband.

But, what exactly awaits Izuna in the West country?

“The other day I saw an interesting porn video, about a guy having sex with his boss.” Hasegawa Naoyuki, 37 years old. His work is perfect, but by contrast, in his private life, he’s become aware that he’s gotten out of shape. Katagiri Satoshi, 30 years old. Handsome, smart, good personality, likes both men and women, a prince admired by all at his company. Or he should have been. He stole money from a university student, and he destroyed the car of a man he didn’t like. And secretly, he’s totally bankrupt?! One night in a park, Hasegawa meets the Katagiri that nobody knows!

what happens when gamers are summoned back to the real world in their game avatars

In the Sengoku Period (1579), there is a young woman who has lost everything, and dedicated herself to seeking strength and a death on the battlefield. Reiri once lived happily with her family, until the day soldiers came by after a battle. Her father, mother and brother sacrificed themselves in order for her to survive. She was only saved with the intervention of Okabe Tanpa no Kami, who had been sheltering in the village. In his service, she grew and learned to fight well, chasing her goal of a death in battle. However, her path to death may not be as short and straight as she hopes.

In the town of Lindworm where monsters and humans coexist, Dr. Glenn runs an exemplary medical clinic for monster girls with his lamia assistant, Sapphee. Whether receiving a marriage proposal by a centaur injured in battle, palpating the injury of a mermaid, or suturing the delicate wounds of a flesh golem, Dr. Glenn performs his job with grace and confidence. But when an unsavory character seeks to steal a harpy egg, how will the unflappable Dr. Glenn respond…?

Its been 15 years after the last Great War. While the scars of wars appear to have vanished on the outside.In truth, the world has become a much harsher place.Follow the journey of Felix and Bay on their quest to find someone from their past.

Shirokuma Café revolves around the everyday lives of a group of animals mingling with humans at a cafe run by a polar bear named Shirokuma-kun. His animal friends include Panda-kun, a lazy but well-meaning panda bear; Penguin-san, a sharp-tongued penguin; and Grizzly-san, a grizzly bear with a wild personality.

Continuation of Kono Subarashii Sekai ni Bakuen wo! Adapted from the light novel series of the same name.

A 4-koma manga about an almost expressionless guy who tries his best to get closer to the person he loves, but always ends up being misunderstood because he looks kinda scary to her.

I want to be popular! I want a girlfriend!

The wish of the unpopular virgin college student, Ikuta, has finally been answered! Before his eyes, a cute demon girl called Gremory has appeared! However, this demon girl like beautiful girls so much that she can’t even look them in the eye. The story of a virgin and an air-headed demon girl….!?

A short, completed, 4-koma, twitter story about a girl who doesn't know what happiness is and a boy who tries to teach her what it is.

Miyu is an amateur ballerina who wants to become a real star of the stage in the future. Unfortunately, not only the school club is empty but also Miyu's loneliness and lack of skill is a tall wall between her and her goal. But suddenly, there are people who want to join the club...! Yet, the problem is that both their styles and personalities are the exact opposites. Are they capable enough to stand and support each other?

A side story (?) of the original Orenchi no Maid-san with the same characters, made by the same author as a hobby.

Shiori is the worst player of her basketball club and is looked down on by her team members, until a talented first-year joins the team.