Dragoon - The way to the dragon knight - Chapter 84

The heavenly God of Warriors was betrayed by his true love and murdered at the very first night of wedding just because his merits made the monarch insecure. Reborn in a hundred years, Nie Tian would be an appendage no more. Reach the welkin, reverse the fate, reign over the heaven and reconstruct the worlds.

- Description from novelupdates

Xia Ji traveled to the continent of Kyushu and became the Emperor of Xia.

I thought I had no worries about food and clothing, and I could enjoy peace of mind.

But he never thought that he might be the last emperor.

The seven kings of the court were in chaos: Qin Wang Ying Zheng, Tang Wang Li Yuan, Ming Wang Zhu Di, Yuan Wang Genghis Khan, Han Wang Liu Che, Song Wang Zhao Ji, and Qing Wang Kangxi.

The harem is full of ruthless characters: Concubine Jiang Yuyan, Concubine Dongjun, Concubine Xuan, Concubine Yuan Zhao Min, Empress Wu? Live? br />This kind of hell start, is it possible to become the last emperor of Xia Dynasty ?

But luckily.

At the beginning of the game, Xia Ji awakened the National Games Summoning System.

Spring and Autumn Sword Armor! Great Confucian Sage of Chu! Soldier in white!

Flatten the harem, rule the world, and suppress the seven kings.

From then on, the great summer that will never end has been created! …

- Description from novelbuddy

This stands at the forefront of strategy guides to Life (a shitty video game)!

I’ve reincarnated as the reverse harem game’s villainess, the one and only step-daughter of the Eckart duke family.