MTL - Metropolitan System - Chapter 37 This is the case.

Found a suitable body named Bai Xiao. Reincarnating into the World of Elementalists.

“Mission: Overpopulation of carnivorous fish in the lagoon.

Please kill 666 carnivorous fish in order to prevent the destruction of the lagoon’s ecosystem.

Reward: 20 Balance Points.”

“Mission: Forest fire.

Extinguish the fire.

Reward: 200 Balance Points.”

- Description from Novelupdates

Bei Qingqing was left to fend for herself over eighteen years before the rich Bei Family finally took her back. She found that her identity as a daughter had been replaced by the ‘naive and adorable’ Bei Bei, who was kept in her family.

Affection grows with proximity, and that certainly applied for them — there was just no comparing the affection the Bei Family had towards Bei Bei, to the affection of their biological daughter. They had spoiled Bei Bei for eighteen years.

Using Bei Qingqing’s adopted mother’s illness as leverage, the Bei Family forced Bei Qingqing to substitute Bei Bei’s marriage to a comatose man, Chen Jiazhi.

It seems that Bei Bei was now all that mattered to them.

Even so, Bei Qingqing married Chen Jiazhi, who had been comatose for years and said to have no chance of waking up. By doing so, she earned her two-million-yuan dowry for her adopted mother’s hospital bills.

Though Bei Qingqing believed that she would be widowed for life, she didn’t expect an accidental kiss on their first night to wake Chen Jiazhi!

Everyone in the entire Chen Family — from grandparents to uncles — are now indebted to Bei Qingqing. They all spoiled her, especially her now-awake husband Chen Jiazhi. Naturally, the Chen Family also took care of her adopted mother by providing her with better treatment!

Bei Bei was left red-eyed in fury! She was supposed to be Chen Jiazhi’s fiancee. His enormous wealth and affection were rightfully hers!

Moreover, Bei Qingqing had health problems and couldn’t get pregnant. Bei Bei will do her best and scheme to replace Bei Qingqing!

Unexpectedly, however, Bei Qingqing was having morning sickness just two months after marrying despite rumors of her infertility!

As for the Bei family that abandoned her? They were declining at a visible rate, and soon wouldn’t even deserve to lick Bei Qingqing’s shoes!

Jiang Chen had unexpectedly found himself thrust into a world of cultivation, stepping into the role of a core disciple within a famed sect. Fated to be the villain, his future loomed with calamity. He had plotted against the protagonist, crippling his dantian and leaving him a disgraced outcast teetering on the edge of expulsion. Were it not for an unexpected twist, Jiang Chen’s part might have ended as a mere footnote in the protagonist’s glorious tale. Fully aware of his precarious position, Jiang Chen’s lips curled into a sly grin. Alone, he mused: ’Is the protagonist powerful? Without a doubt.’ ’But will I tremble in fear? Absolutely not.’ ’Why? Because I have the Immortal Great Villain System!’ ’Wait... there’s more than one protagonist?’ ’Well, isn’t that just perfect?’ With a determined glint in his eyes, Jiang Chen declared to himself, ’As the ultimate Great Villain, I will defy the will of Heaven and seize my place at the summit!’

[Naruto + System + Blackening + Cool Text]

Fengxu travels through the Naruto world and becomes Naruto’s suppressed blackened personality.

After experiencing all Naruto’s experience, he can’t repay grievances with kindness, let alone forgive!

Since the main personality has nothing to do, then his sub-personality is in charge of everything!

Bullied Naruto’s kill! Framed Naruto’s kill! Want to master Naruto’s kill!

At the same time, Feng Xu continued to weave a web to eat away at Naruto.

“Naruto, do you know the difference between a king and a mount?”

“Naruto, all the suffering in this world is caused by the lack of ability of the person concerned.”

“Naruto, you can’t protect anything, you just kill everyone.”

“So, give your body to the stronger me.”  …

- Description from novelbuddy