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, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level. (Source: Batoto)

Description:

Under the protection of the gods, a relaxed life with slimes in another world begins! One day, the life of middle-aged Japanese businessman Ryoma Takebayashi came to a rather sudden and disappointing end. Ryoma had never had a blessed life, but after his death, three great gods sought his cooperation and reincarnated him as a child in another world with swords and magic! Receiving a most cordial and divine welcome from the gods, Ryoma decides to live leisurely on his own in the forest for the time being. Working diligently at magic and hunting, Ryoma’s greatest passion comes to be researching his tamed slimes?! Training a variety of slimes (some newly discovered), the curtain rises on this easygoing life fantasy celebrating a second life with kind people in another world! (Source: J-Novel Club)

Description:

A magic nerd's life came to an end after a dreadful encounter with the nobles who ended his life with a powerful spell. His last wish, being able to study and master more magic, has been answered when he was reincarnated as Lloyd de Saloom, the 7th prince of Saloom Kingdom. Now he'll be able to perfect his magic as he pleases...(source: MU)

Description:

After being reincarnated, Ars Louvent is supposed to live in a different world as a weak aristocrat. Both his physical strength and intelligence were mediocre in both worlds, but here he naturally possessed a skill called "Appraisal" that allowed him to see the potential of any person. By gathering talented people by his side, Ars uses this "Appraisal" skill to transform his weak territory into the strongest one! But the road ahead of him won't be so simple.(Source: Mangadex)