Ojisan to Neko to Shoujo
It is the Taisho period. A straight-laced man named Shougo works as a teacher for an all girls school, and lives with his black cat named Kuroi-san. Then one day, his nephew brings him a tight-lipped servant who doesn't talk. Is this beginning of a curious, and slightly warm life of a man, a cat, and a girl? (Source: LoreScans)
Ousama ni Kiss!
On the outskirts of Tokyo, Toubuisazaki High School is known for its mottos of “Yakuza are your friends!” and “Seize the chief’s weakness!” Amidst these scary rumors is the king of the school, high school student Maki: a person with an abrasive personality, who thinks of his classmates as servants. It’s a mystery that Yoshifumi, the school nurse, loves him. As Yoshifumi uses various tactics to draw Maki closer, how does Maki react? …He likes it! (Source: Blissful Sin)
Slime-san to Yuusha Kenkyuubu
2000 years ago, there was a battle between a warrior and the demon king. Through this epic battle, the demon king won. Now, there are kids between the ages of 12 through 18 that are direct descendants of the demon king. They each have unique transformation powers that allow them to turn themselves into varying monsters, such as slimes and golems. Imaichi Butsuko and Hinase Suiren are both one of these monster kids. With the impending resurrection of the warrior, these kids enjoy their daily school lives while preparing for battle! (Source: MangaHelpers)
Gakkou no Kaidan: Abunai Onna Kyoushi-hen
Shijou Yukari, a substitute chemistry teacher in the school. With her numerous inventions include pharmaceuticals, apparatus, etc. she satisfy many students' wish, however, when people abuse these inventions, things always end horribly...
The island of Growerth in northern Germany is home to Viscount Gerhardt von Waldstein, a vampire who rules the island as the Master of the Night. His accepting and merciful character has naturally attracted many nonhumans to the island in search of a place to call home. All sorts of colorful characters, from fellow vampires to witches and werewolves inhabit Waldstein Castle. Chief among its residents, however, are the viscount's family—his twin children Relic and Ferret. Only a slight distance from the castle is the city of Rukram, whose mayor is a trash-talking Dhampyr with a bone to pick against the viscount. There also seems to be a young woman with a taste for vampires' flesh, and a shapeshifter with a complex about his true form. And then there's the mysterious Organization—a group of vampires plotting... something. No one quite knows what they're up to, not even the members themselves. A vampire series by Ryohgo Narita, Vamp is an early installment in Naritaverse, along with Baccano! and Durarara!!. (Source: TV Tropes) This series is on hiatus.
In ancient China there exists an alternate dimension called Jusenkai, whose inhabitants, the Senkaijin, possess tremendous powers. One of them, YanLang, fled to Earth along with his rebel army after being defeated during his attempt to overthrow the Emperor. In order to capture the fugitives, the Emperor sent his elite soldiers to Earth after them. LiFang has been traveling alone to find his father’s murderer when he picks up a sick and injured man. That aloof man, TuoRen, turns out to be one of the imperial soldiers sent to earth to hunt and capture the Senkaijin rebels. While his comrades work in pairs, TuoRen prefers to be alone. That is, until the strangely powerful human, LiFang, decides to follow him on his quest… (Source: Storm in Heaven)
As part of her grandmother’s scheme, twenty-year-old Jae-Gyu is sent from her secluded country village to the big city. Completely out of her element and out of money, Jae-Gyu manages to get into trouble as soon as she gets off the bus. She expected the move would be rough, but she never thought she’d meet the last person she ever wanted to see again — Hee-Do, a boy from grade school whom she bullied mercilessly. Even though he’s a big-time rock star now, he still remembers his childhood tormentor. Is he out for revenge? Or is it something quite different…? (Source: Yen Press)