Global Reincarnation: Only I Know the Plot - Chapter 339:

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.

[Please transform.] [The penalty for disobedience is death.] I am saying this because I have been wronged. Help me!

[mafia, crazy love, abusive love]She was reborn, returned to the age of 18, when she already possessed a colossal fortune. In the previous life, she was executed on the street and died tragically merely due to a dangerous man she'd encountered once.After being reborn, she decided to change her fate. As she pondered how to avoid him, she unexpectedly discovered his name on the list of beneficiaries of the charity.“Can I kill someone?” She asked her assistant.“No. The law binds you!”So, to survive in this life, she tricked him back home. Initially, she believed it to be a means of repayment.Until one day, she felt his gaze become terrifying. She saved him, but accidentally led him down a more terrifying path. Everything had spiraled out of control…When they meet again, he is already a terrifying demon. With blood on his face, he forced her into a corner and said, “Be my mistress, or let me be yours.”She threatened him with a knife, but he laughed even more brightly and held her hand, saying, “You're afraid of me? Ok, I'll teach you how to hurt me the most.” And he guided her hand to hurt himself.She suddenly understood that she should have left him alone. He was injured, bleeding, but still laughing.She said lovingly, “I am indeed afraid, but I don't deny that I love you...”

A 30-year-old 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?

- Description from novelupdates