I've Become a Genius Actor - Chapter 28:

As Orson read the novel written by the girlfriend who had left him, he gently remarked on how terrible the story was. But then, noticing a foul smell coming from the kitchen, he went to investigate. He realized there was some kind of gas leak. Already furious about being dumped, Orson became even angrier at the state of his kitchen, and in his rage, he hit the light switch with a powerful punch. Naturally, the explosion that followed killed him instantly, and Orson passed into the afterlife.After spending some time in limbo, he found himself reincarnated in an unfamiliar world. However, he quickly realized he had been reborn inside the cliché-filled novel written by his ex-girlfriend. As if that wasn’t enough, he had ended up in the body of Neonidas, a useless duke who was also the fiancé of the story's villainess.____There may be a bit too much swearing and slang in the first chapters, but it gets less afterwards.There will be no yuri, bl or ntr in Neonidas(MC) harem

Having been reborn in the high school graduation season of 2008, Li Yuan found himself back at the moment when he confessed to the school beauty...Bai Weixi: “Thank you, being liked by you is an honor for me, but I don't want to be in a relationship right now.”Li Yuan promptly took back the gift he had presented: “Then give me back the gift I gave you.”Bai Weixi, with her beautiful eyes wide, looked at him in disbelief: “Li Yuan, what do you mean?”“You've already rejected me, yet you still want to keep my gift?”“But we are good friends!”“Heh, like I'm short of good friends? What I'm short of is a girlfriend, you get it?”Watching Bai Weixi, disheveled in the wind, Li Yuan turned to ask: “By the way, could you give me your best friend's phone number?”Bai Weixi fumed with anger: “Li Yuan, what are you trying to do?”Li Yuan just shrugged nonchalantly: “Nothing much, she's prettier than you, I've decided to pursue her instead.”

The god king of Xiaoting in the upper realm fights down, and the spirit of the mixed dragon spirit is reincarnated on the earth, runs rampant in the city, and then fights in the sky.

Those who obey me prosper, those who oppose me perish!

- Description from novelbuddy

After a mishap, he accidentally became the protagonist. Unexpectedly, he and the villain cultivated together and they actually became dao companions.

“If you want to be with me forever, there is only the supreme road of achievement. Are you willing to travel with me?”

“Of course I’m willing.”

……

In Li JinZhi’s view, the protagonist and villain’s coexistence should be like swords and spears facing each other, a feud.

But when he crossed into the novel and became the protagonist; when he placed all his trust in the man who was supposed to be the villain; when the other side revealed some unusual feelings to him; when he held Ye Yu’s hand to the altar, he discovered that the relationship between the protagonist and villain isn’t as dull as he imagined.

When the monotonous pattern is broken, the feelings of resentment turns into sharing a common destiny.

- Description from Novelupdates