Submitting to My Best Friend's Dad - Chapter 992 : Something Right

To reward Meng Fan for his bravery before his heroic death, the cosmos rewarded him with a ‘system’, sending him back in time to three months ago, alive.

- Description from Novelupdates

The previous life is nothing but a joke. Being used completely then abandoned mercilessly. How can I be this stupid to not even notice such an obvious scam? Fortunately, I can have a second chance with my rebirth. Sister, Brother Yi and whoever mistreated me in my previous life, are you ready for my revenge and the counterattack of a princess?

Doomsday comes, and human beings enter the heavenly world.
Ten years later, Yang Chen, who was betrayed tragically, returned strongly with the Tianyu bug. In this life, he vowed to make the betrayal pay the price. He has a powerful bug bonus, just like an open hang. Frightened to hear…

- Description from novelbuddy

After his mother dies from a serious illness, Mo Jingchun is left to shoulder the burden of raising his six-month-old sister on his own. Fortunately, he’s an exceptional student and he awakens the Science System. “Congratulations, dear host, for winning the AI Assistant's first-generation Jarvis source code.”