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:

In a certain world, there was someone who excelled in magic combat, people called him "Sage". Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence.　 And the conclusion he arrived at was very cruel: "My body is not fit for magic combat". Yet he didn't give up.　 He sealed his own soul with a magic art, to be reborn in a far-off future. And in the completely-changed world he saw in his new life, the magic theory was of unbelievably low level. (Source: Sousetsuka)

Description:

Amamiya Hiroto is unlucky. His life consisted of misfortune after misfortune, culminating in an unlucky death during an incident on a school boat trip, trying to save a girl he barely knew. After death, he met a god of reincarnation who requested that the hundred or so dead passengers—one of them being the girl he tried in vain to save—be reincarnated into another world. Yet a series of unfortunate events forced Hiroto to reincarnate with even less luck than before, starting with nothing but a tremendous amount of Mana. His second life, far worse than his first, came to a cruel end. However, upon meeting the god a second time, he was informed that there would be yet another reincarnation—one that had already been set in motion and could not be stopped. Not wanting Hiroto to live long, the god cursed him before he was reborn in the hopes that he would either die quickly or commit suicide. Hiroto was reborn once more as a half-Vampire, half-Dark Elf. A Dhampir. Not wanting a fourth life, he is determined to live this third life with the only things remaining from his previous lives—death-attribute magic and his enormous Mana pool. (Source: NU)

Description:

A genius magician, to fight against his fate to die a natural death from old age, grasped at the truth of magic to allow himself to reincarnate with a power he created himself. The cycle of reincarnation is repeated multiple times and in his 31st reincarnation, the magician became a boy named Syril who lives in a village of elves. However, that village is ruled by Humans, and the Elves are treated as livestock. After becoming 14 years old, Syril, who regained his past knowledge and experience, stands up to help a girl, who is his childhood friend. The story of the creation of an ideal country begins in that one village, a place where all races can coexist. Elves, Fox-girl, and various other Heroines. (Source: LygarTranslations)