Elf Tensei Kara no Cheat Kenkoku-ki - Chapter 7Book 5: -2: Contract

Our protagonist was a Mexican who died on a flight, when he woke up he found Apollo who reincarnated him as the grandson of Gaius Octavian Turino (Augustus) the first Roman emperor, having a mission in hand to conquer the New World to save the Roman polytheist world and his existence.

King Grey has unrivaled strength, wealth, and prestige in a world governed by martial ability. However, solitude lingers closely behind those with great power. Beneath the glamorous exterior of a powerful king lurks the shell of man, devoid of purpose and will. 

Reincarnated into a new world filled with magic and monsters, the king has a second chance to relive his life. Correcting the mistakes of his past will not be his only challenge, however. Underneath the peace and prosperity of the new world is an undercurrent threatening to destroy everything he has worked for, questioning his role and reason for being born again. 

Traveling back to 1983, Lu Jiaxin faced the beginning: her original owner failed the college entrance examination and was abducted, her stepmother was a sweetheart and her father was a pure egoist.

Designer Lu from Hell’s Beginning decided: The stepmother will be in the first grade of junior high school, and she will be in the fifteenth grade! My father is not a good man, so she taught him how to be a good man!

She still had to go to university. I heard that the University of Hong Kong in the 1980s was very valuable, so she waved her sleeves and ventured into Hong Kong’s financial circle.

Big Brother, Beep Machine, Lingling Paint on the dance floor!

Victoria Peak, Repulse Bay, Victoria’s wealthy ladies!

- Description from novelbuddy

Luo Qing Chen is a wandering spirit that died thirty thousand years ago, roaming the Chaos Space

In order to not turn into dust, she is bound by an ice cold system to travel through time and space to complete missions.

Girls that pretend to be weak?  Slap them without explaining.

A silly cannon fodder?  Helping them amass treasures.

Meeting a real male god?  All of them will pamper.

System: Dear masters, what do I do if my host even dares bully the heavens?  Waiting for an answer, it’s urgent!

A certain male god: Change systems.

System: ヽ〔?Д?〕丿

- Description from Novelupdates