If you're looking for manga similar to The Chronicles of Narnia: The Magician's Nephew, you might like these titles.
One day, in a certain private school with dormitories, the whole school was transported into another world. I, Gaya Kazuhisa, from the 1st Grade of the High School Section, had been bullied for long periods of time. To kill the culprit who had bullied me, I dug a trap, but unexpectedly I killed a monster. From that moment, I evolved into a rare existence that can go against the monsters. At the same day, I saved a girl from Middle School Section 3rd Grade, Shimozono Arisu in the forest from an Orc. When I was working with Arisu to defeat the Orcs, and gradually leveled up, I was forced to make a choice: Should I choose the Summon Magic which is suitable for surviving alone? Or should I choose Support Magic which is used when battling together with others?
Meg, an Office Lady, is transported to a different world, into a young elf girl's body. She's picked up by a handsome man named Guilnandio and joins his guild, Ortus. There, all the members quickly start adoring her and she becomes a healing figure in the guild!
In an age long lost to legend and myth. In an age where humans had still yet to establish a system of writing. It’s said that there existed a Magus in a country named Scarlet. It’s said that he imparted knowledge concerning language and writing, taught how to cultivate the lands, instructed the ways of raising animals, and brought about the gift—nay, the magic of fire. It’s said that he was a dauntless youth, a dragon clad in scarlet red scales, a person worshiped far and wide. It’s said that this man was the God of Civilization. Yet strangely, his name had been virtually wiped from the records. Therefore, he was simply referred to as —The Magus of Genesis.
The manga follows Wendelin's life as a child, and features stories that are not in the novels' main manga adaptation
Reishin Saionji, a young man who was supposed to be at home, finds himself in a strange cabin. In the midst of his bewilderment, he suddenly receives a text message on his smartphone from someone who calls himself "the god of games and pleasures." To his surprise, it is in response to a wish that Reoma suddenly muttered, inviting him to another world. In addition to giving Reishin a cheat setup for his phone, he also gets the privilege of being transferred as an extremely rare race of "demigods!" Reishin, confused but excited that he has arrived in the other world he had dreamed of, follows the tutorial on his phone and heads for the town. However, as a Demigod, his surroundings do not overlook him...?