I am that male friend in the harem story - Chapter 242: The Enlightenment

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

The world is full of mysteries. Strange, seemingly unexplainable events occur more often than we may realize. A young boy may catch an illness no doctor can explain. An office may catch fire for no apparent reason. And perhaps, someone may die a sudden and unexpected death – their bodies blighted beyond recognition.

Ye Chen transmigrated into the world of cultivation and became the Saint Master of a Sacred Land. However, he discovered that the Heavenly Origin Sacred Land’s source of income took a big hit, and their finances were in the red. The Sacred Land is basically on the brink of bankruptcy.And so, Ye Chen invented the mobile phone for the cultivation world, causing a sensation throughout the realm. And this was only the beginning!Foundation Establishment cultivators delivering packages on their swords.Qi Refinement cultivators attending online classes from the comfort of their homes.The three major Sacred Lands all opening online shops!And a legendary Saintess becoming the queen of live streaming!All these changes started on the day the cultivation world’s version of a mobile phone was released!

“But he is a good man,” she argued to see his eyes narrow at her words.