MTL - Senior Brother is Number One In the World - Chapter 1 twins

Frank, a mercenary known for his cold ruthlessness, decides it’s time to leave the bloody world of the underworld behind. But the underworld has no plans of letting him go. Relentless enemies from his violent past keep hunting him, and eventually, they succeed—Frank is killed.But fate has other plans. Instead of staying dead, he is mysteriously reincarnated into the body of a cop in a world filled with crime, corruption, and dark secrets. With the help of a strange, all-knowing system, Frank is given the chance to live again—this time, to prevent crime before it happens.

Guang Xiaoyu always thought her senior brother was a dispirited ordinary person, until one day, his pet cow crushed an entire group of Divine Kings with a single stomp.The black dog opened its mouth and expelled a Sword Qi, blocking millions of the Demon Race.The Earth Chicken that babbled every day turned out to be a descendant of the Ancient Phoenix!Ahhhh!Her worldview collapsed!Zi Ji: “Senior sister, it's terrible! The Demon Emperor is leading an army of millions from the Demon Race towards us.”Guang Xiaoyu: “Senior brother, help!”(This is a story about the Demon Emperor’s rebirth, the Netherworld’s daughter’s reincarnation, the protagonist's pet-keeping journey, and a call to everyone to love and care for small animals!)

A boy from 21st century Earth, met an accident and later was reborn in Naruto’s Ninja World.
He is born in Uchiha Family and becomes the useless brother of Itachi Uchiha and Sasuke Uchiha…. Let’s see how he changed the Naruto world.

- Description from Novelupdates

[Fast Wear + Group Pampering + Gentle Female Lead + Crushing Scum]Su Zhiruan had died unexpectedly and was bound to the Childbirth System. Completing tasks would earn her eternal life and inexhaustible wealth.This sounds great!In her last life, she had no children. After binding with the system, she became blessed with many children and was pampered to the heavens by the male lead!All her children were obedient, sensible, and easy to raise, making her a true bringer of fortune![Scenario One]: Five years into the Emperor's reign, the harem had produced no offspring. After a night of passion with Su Zhiruan, the harem became filled with princes and princesses. The Emperor would dote on them even during court sessions, setting aside his imperial deportment to play with the children and personally teach the princes. His gaze towards Su Zhiruan grew increasingly fervent.“My dear, would you like to be my Empress, and together take care of our children, becoming my wife above all others?”[Scenario Two]: The most mysterious gentleman in the Capital City was rumored to be disabled. Approaching middle age without any descendants, his relatives eyed his fortune and wished him dead daily. Su Zhiruan's arrival utterly dispelled their schemes, as she bore this handsome man a brood of children. When she thought to leave, he held onto her, his normally cold and proud eyes filled with pleading. His voice was deep and low.“Wife, please don't leave me and our children. I beg you.”