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

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Seiji's command transmitted itself through the Yin Yang Seal.

The insect demon started making berserk sounds as it received this command and furiously struggled against it.

Previously, it was invading a human, but now a human was invading and conquering its will… Naturally, the insect demon strongly resisted against this! Although it was greatly weakened and seriously injured to the point where it couldn't fight back anymore, it still didn't want to surrender.

*Shing!* Seiji sliced the insect demon again and then increased the strength of his spell in order to forcibly engrave his seal upon the insect demon.

A white light immediately started invading the demon's body!

"Gagagaaaaa…" The insect demon felt a tremendous pain.

I'll come play with you in the future