I'm The Devil - Chapter 15: Mysteries

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

Qin Chuan arrived in a parallel world and got bound to a system.

What if your worst enemies suddenly became your most devoted allies—because you turned them into irresistible, enchanting femboys?Meet Cecil: a cunning, ruthless mastermind hiding an extraordinary power beneath his calm exterior. With a single stroke of his feathered pen, he transforms those who dare to cross him into beautiful, loyal members of his ever-growing harem. But this isn’t some silly game—it's a calculated campaign to build a nation unlike any other.In a world of secrets, magic, and brutal politics, Cecil must navigate a treacherous landscape filled with dangerous foes and hidden agendas. His targets? Only those who insult, threaten, or betray him. His allies? A charming, fiercely loyal band of femboys who live by his side in a shadowy sanctuary.If you think power is all about strength and magic, think again. For Cecil, true power lies in control, seduction, and a pen that changes fate.Welcome to the Velvet Court—where loyalty is beautiful, and revenge is intoxicating.

In her last life, as a cold-blooded assassin, she died without leaving her body behind and was reborn to the time when she was 15 years old with a supernatural ability.

Teaching a lesson to the parents whom are jerks, playing around with the selfish younger sister, slapping the faces of weirdo relatives.

Outstanding and high combat ability, who said that both looks and intelligence can’t be applied to the same person? With that said, she got the attention of a military officer.

“You’re suspected for the crime of murder, hacking into the general server system…… There’s too many crimes to be listed, you need to be apprehended immediately.”

Song Ye raised her eyebrow and got onto the military officer, “According to Young Master Qin, if I want to be cleared off of those crimes, is there any good suggestion for it?”

A certain someone’s eyes darkened and said, “Marry me.”

- Description from Novelupdates