Margrave's Bastard Son was The Emperor - Chapter 195

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

Sang Qianqian, the eldest daughter of the Sang family, was eighteen when she fell in love with Shen Hanyu at first sight.”I love you, Shen Hanyu.” “But I don’t,” Shen Hanyu replied ruthlessly, his every word determined. “Not now, not ever.”

Furious, the wealthy daughter planned her revenge against Shen Hanyu but somehow discovered that he would eventually become a cold-blooded, tyrannical big-shot who would destroy her family! Her spite towards him skyrocketed, but after she left, he missed Sang Qianqian like crazy, who was now leading a carefree life after moving far away and faking her death. Suddenly, she heard the news that Shen Hanyu, now a magnate and seemingly crazier, had her grave exhumed and was now on the search for her. Alarmed, she quickly packed up her things to go on the run again… only to find the man himself standing outside her door, breathing through gritted teeth, “Running again? Go for it.”Knowing that escape was futile, Sang Qianqian changed her approach and tried to charm her way out of the dangerous situation, only to fail and end up submitting herself.***

Years later, realizing she had been tricked, Sang Qianqiang threw the divorce papers in front of Shen Hanyu. “I want a divorce!”Shen Qianyu simply pulled her into his arms and leaned in for a kiss. Pulling away after a long while, he asked hoarsely, “Still want a divorce?”Left dazed by the kiss, Song Qianqian mumbled, “N-No…” “Then call me darling.” “D-Darling…”Shen Hanyu nodded in satisfaction. “Good girl.”

Being able to see into people's past has no real appeal for the teenager this story is about, letting him use it only as amusement and to show off when he was drunk.Never watch into someone's past beyond a superficial level.Never try to find out more than you should.NEVER. EVER. LOOK. INTO. THE. FUTURE.But everything changed the moment he was forced to look into the future, was forced to investigate a murder, and was forced to make the acquaintance of the victim's twin brother('s fists).The more time passed, the more it appeared that the primary reason for this murder wasn't a local problem, but a global one.This single, marred corpse was the beginning of a threat that would shake the world.(MC looses a screw when he enters the prison)BL, first-person view; MC is shuo (perhaps even a reversible couple); love interest falls in love first; both MC and ML are straight, mutual bending, Enemies to Lovers