After I suddenly died I possessed the body of what I thought was an extra within a novel. From then on my life was mostly calm, though not fulfilling. Until one day I discovered I wasn't just a background figure; instead I was an insignificant character who'd end up being the villainous Grand Duke's secretary, only to die shortly after being near him! But I had no choice, it was too late to change my fate, so I decided to live as obediently as possible under the orders of the sadist villain. But I still had a plan. Even before the female lead makes her appearance, I will try in every way to make the villain a little more normal, or at least ensure that the two do not meet, so that no one will face a harsh death, including me! And then, after the villain doesn't become obsessed with the female lead and becomes more normal, I will be able to resign and live peacefully. So I just cleared all the suspicions he might have about me in order to not incur his wrath and die like in the novel. * * * "I'll give you a choice." The corner of his lips raised crookedly. Though that smile did not reach his eyes at all. "One, don't resign and stay here forever..." His gaze was enough to unnerve me. "Two, let me kill those who dared to give you the idea of resigning...then don't go and stay here forever." No, haven't I already made sure that the villain has become a little more normal!? ...What the heck is going on!? He shouldn't be like this!

I was reincarnated into the Young Master of the Alsar dukedom, the villain of the novel "Romance in the Time Passing". However, there was one problem. I had never read the novel, and the system that told me I must maintain the plotline wouldn't tell me anything! Without any knowledge of how to act as the villain, what the characters I had to bully looked like, or the basic norms of the world, I could only helplessly watch as the plotline veered further from its original.

The immortal sinner who lived for over a hundred years was fundamentally weak-hearted. Therefore, when he found out that his student, whom he regarded as his own child, had deceived him, he felt more sadness than anger and chose to go into hiding instead of seeking revenge. 10 years have passed like that. The problem was that he had more than just one disciple. **** Disclaimer: I love this one but don't know a single Hanja so this is my attempt to read it. Translate directly from a translator with some minor beta so please don't expect much. This contains translations of the first free 25 chapters from Naver: https://series.naver.com/novel/detail.series?productNo=10056687

"Who is this?! I don't look like this! I turned into some pretty boy-!" The eccentric Biomedical scientist yelled in his own chamber of thoughts as he looked at himself in the mirror, a black haired, red-golden eyed male stared back at him, equally in shock. That was his reflection, right? What's even going on?! It was not even a minute ago that he was coming back from work from his job after working with toxic chemicals. Unbeknownst to him, it must've seeped underneath his mask. Just as he opened the door and was greeted by his annoying little sister, he collapsed on the ground. His head throbbed in pain, it felt like his head was being split open. Just the day before he was catching up with his sister on a novel that she forced him to read, "By his highnesses' side." It was a seemingly romance novel but had dark twist and turns and an interesting plotline. Safe to say she had him hooked as well as she was. In his last few moments, he reached his hand out towards his sister, before his vision blurred; and finally went pitch black. But found himself transmigrated as the Villain of the novel, who's destined to die by the protagonist hands! What shall he do? [Updates on Fri. Sat. and/or Sun. May vary!]