ShangriLa Frontier ~ Shitty Games Hunter Challenges Godly Game ~ - Chapter 12: Common Sense Is Just Free Ideas Not Bound By Theory (Loosely Speaking)

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

Reincarnated into a land of cultivation, Yuan Zhou uses his Earth knowledge and assumptions to become a genius under the heavens for both business and cultivation. However, he walks the path of defiance, exceeding all rational cultivation bounds. His business ideas struggle against the stagnant culture that pervades the land, but the things he doesn't lack are his drive for immortality and power.

'Nina?'The thought hit me before I even really processed who it was. Nina Shoka from my class. She was just walking along, probably listening to music, totally unaware that this car had lost control and was sliding right toward her.I didn't think about it. Didn't weigh the pros and cons or consider my options. My legs just started moving.I dropped my phone and sprinted toward her. The car was maybe three seconds away from hitting her when I slammed into her side, pushing her as hard as I could toward the sidewalk.She went flying, landing hard on the concrete but definitely out of the car's path.Me? Not so lucky.The impact felt like getting hit by a train. One second I was pushing Nina to safety, the next I was flying through the air. Then I hit the ground and everything went wrong at once.I couldn't move my legs. Couldn't really move much of anything, actually. There was this weird warm feeling spreading across my chest and stomach, and when I tried to breathe, it felt like drowning.'Well, this sucks,' I thought, staring up at the sky. 'Guess that's what I get for being a hero.'My vision started getting all swimmy and weird, but I could make out Nina crawling over to me. She had pulled out her earbuds and there were tears streaming down her face.“Why did you do that?” she kept asking, over and over. “Why would you do that?”I wanted to shrug, but my shoulders weren't really cooperating. It seemed pretty obvious to me - she was in trouble, so I helped. That's what you do, right? Nothing fancy about it.She was talking to me, saying my name a lot. I didn't realize she even knew my name, to be honest. We had been in the same class for like three months and I don't think we had ever actually had a conversation.“Kofi, stay with me, okay?” she was saying. “You're gonna be fine. The ambulance is coming.”

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.