The Rise Of An Empire In Ancient Europe - Chapter 38 -

Floren, the most renowned realm of all realms, yet forgotten by all. The soul of a person from Earth accidentally crashed into this unexplored realm, ending up in a dragon egg. Transforming into a crimson dragon with the mindset of a human, Claudius was different from other dragons. He only wished to live an easy life, enjoying his lifespan of thousands of years to its fullest. However, the world is not such a forgiving place, dragging Claudius into countless struggles and death battles. Is it really possible to live a leisurely life?!

- Description from Novelupdates

agreed. He thought they might just talk, have a few drinks, and that nothing significant would happen. However, she invited him to a hotel, and they spent the night together.The next morning, she told him it was just a one-night stand and that they would probably never meet again. She said goodbye and left. Ronan also decided to treat it like that.The next day, at his college's hosting club, Ronan was given the responsibility of hosting that year's annual function, where they had invited a singer.When Ronan looked up at the singer, he was shocked—it was the same woman he had spent the night with. After checking her history and social media, he formed an impression of her. Every picture she posted was in revealing clothes, bikinis, or almost nude outfits.He concluded that she was just a promiscuous woman, likely driven by lust, and that she had probably chosen to spend the night with him simply because she found him handsome.Understanding this, Ronan decided to focus on his work. That morning, she had made it clear that it was just a one-night stand and nothing more. He would treat it exactly that way and carry out his responsibilities.Protagonist has System---No NTRIt's Harem, with many girls but The Singer is Main Heroine.

Lin Xuan was transmigrated to a fantasy world and had a one-night stand with the powerful Ice Empress.

Jiang Xiaoman was bound to a system when she was three years old. The system told her that she was the lost daughter of a wealthy family assigned to play the cannon fodder in this script. The fake daughter that her parents adopted was the heroine of the story. 

Jiang Xiaoman blinked her eyes and asked, “What is a cannon fodder?” 　 

System: “You all live in a book, and everyone is assigned their role. From now on, you should keep on blackening and be a bad child. Do you see that little boy? He has a bigger role than you, in the future, he will become the big bad villain. Why don’t you bully him now, and show him up real good!” 

The naïve Jiang Xiaoman picked a handful of colorful flowers and stuffed them into his hands. “I’m showing you something really good!” 

System: “…”

Darling, you got it all wrong! Not showing him something good that way!

The little boy: “I don’t need friends, I don’t need company. I’m just a burden that no one wants. It’s my destiny to be abandoned.” 

Jiang Xiaoman: “That’s wrong. Everyone’s existences have meaning. System said you are especially important, even more important than me. You’ll be a really really useful person in the future!” 

System: “…??”

Did it say that?? 

Later on, the system stopped giving Jiang Xiaoman any tasks. Jiang Xiaoman was very sorry and said, “Mr. System, why won’t you play with me anymore?” 

System: “… just try to grow up first and learn to understand every word! You’re killing me!!” 

Jiang Xiaoman worked hard to blacken (not really) under the system’s supervision until she was reunited with her wealthy parents. She scratched her little head and asked, “Mr. System, what about the task? Didn’t you say that we should fight over the family’s wealth?” 

System: “What kind of wealth do you still want to fight over? You already have more money than your wealthy parents!”