Ember Dragon - Chapter 295: Shark-Lizard Beast

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

There are times when all it takes is the right voice to help you realize the greatness within to conquer the painful evil without. Uzumaki Naruto's voice of promise turns out to be his... from the future.

Previously, Jian Yiling was the supporting character who was destined to be cannon fodder. However now, with the memories of future events, Jian Yiling who had crossed into the novel transformed into a hidden big shot. Not only is Jian Yiling not interested in the male protagonist, but she also leaves the people around her in astonishment and bewilderment.