Description:

After living a painful life as an office worker, Azusa ended her short life by dying from overworking. So when she found herself reincarnated as an undying, unaging witch in a new world, she vows to spend her days stress-free and as pleasantly as possible. She ekes out a living by hunting down the easiest targets—the slimes! But after centuries of doing this simple job, she's ended up with insane powers...how will she maintain her low key life now?! Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita has been licensed in English as I've Been Killing Slimes for 300 Years and Maxed Out My Level by Yen Press.

Description:

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories. Though he was surprised by the magic and the strange species of that world, he adapted very fast to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his tight discipline in order to reach his goal: resume his career as a teacher which he left halfway through in his previous life. This is the story of a man who based on the memories and the experiences of his previous life, became a teacher who travels through the world with his new students.

Description:

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world! They're treated like heroes and tasked with the duty of saving the human race from utter extinction. But what should have been any otaku's wet dream quickly turns into Hajime's nightmare. While the rest of his class are blessed with godlike powers, Hajime's job, Synergist, only has a single transmutation skill. Ridiculed and bullied by his classmates for being weak, he soon finds himself in despair. Will he be able to survive in this dangerous world of monsters and demons with only a glorified blacksmith's level of strength? (Source: J-Novel Club)

Description:

After being killed by a passing robber, a normal 37-year-old guy find himself reincarnated in another world as a blind slime with unique skills. With a new name "Rimuru Tempest" he got after meeting his new friend, the "catastrophe level" Storm Dragon Verudora, he starts his slime life in another world with his increasing number of minions. (Source: Guro Translation)