Rebirth from the Ashes - Chapter 791 - Pregnant

Warden wakes up in a wilderness with a hole in his mind, deprived of all his memories. Lost, he found within himself an aptitude for combat and magic.On happenstance, he rescues a pair of youths and an entire village, pushing him into a renowned academy of mages and warriors alike to become a teacher.Warden adventures across the divided land of Ezim, determined to unravel the mysteries of his past. However, the task becomes incredibly hazardous when his own path—the ruinous power of Void that runs through his veins—holds a connection to the Traitor Gods, who threaten to cast their shadow upon the world once more.

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

High school student Misumi Makoto is called into a fantasy world by the god Tsukuyomi, in order to be a hero. However, the Goddess ruling the world isn’t as thrilled to have him there, and kicks him to the edge of the world. Tsukuyomi declares that Makoto is free to find his own way after Makoto is abandoned by the other Goddess.

He transmigrated and got a system but Lin Feng’s pressure is as big as a mountain.