Monarch of Evernight - Volume 2 - Chapter 10: An Uninvited Guest

Zong Shou is a player of the historical VRMMORPG “God Emperor,” and him being one of the “Seven Emperors” within the game.

For unknown reasons, Zong Shou finds himself transmigrated into the past, a period just before the “God Emperor” game history started! Possessing the weak body of a monster princeling in the process.

Zong Shou adventure describes his struggles to stay afloat in a merciless environment, and rising up despite all adversities, of course, surrounded by beauties along the way.

- Description from Novelupdates

After 20 years of dedicating his life to opera ever since he had quit the performing arts high school, he had failed at an interview. Losing his motivations, Jo Yunjae depended on alcohol to live out his days until one day, he had been sent back 20 years in time, to the day before his high school admission.

I just want to be different, no one can guess what I want to do, the more mysterious the more powerful.

- Description from novelbuddy

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates