Idle Fish Goes Ashore

A 30-year-old Chinese NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters! 
After reincarnating, he realized that he was endowed with a miraculous game-like system, which enables him to increase his own stats and transcend the limits of the human body. This system even has a game-breaking ability to save and load in real life!
In this new world that’s akin to a 2-D game, he just wants to enjoy life and head for a glorious future... However, he is quickly embroiled in a complex plot. Can he unlock his true potential and utilize his system to break the shackles that confine him and discover the truth about his previous body’s circumstances? 
Note: This novel have an open ending with multiple possibilities, all fans are welcome to imagine an ending together.

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NEET Receives a Dating Sim System

imperfectluck

He hadn't thought too much into it at first and had the mentality of simply trying it out. But now, upon closer consideration, was it really the best choice to "educate" Shinobu?

Yomi's joking aside, she—Shinobu Miaki—was an artificially created product that his enemy made. Leaving her alone might cause harm to others… he didn't care if she killed Akatsuki Mitarai; in fact, he would be delighted if that happened. However, if she turned into a powerful demon that posed a danger to others, that would be a bad thing.

He felt that he should act in order to prevent harm from coming to others. But if he "educated" her in order to prevent her from turning into a demon, wouldn't that end up benefitting Akatsuki?

Then, Seiji pondered if he should take advantage of her in killing Akatsuki off, but not letting her devour Akatsuki and turn into a demon. Was this possible?

She is a demon