The Sims: I Open the Immortal Path for All Beings - Chapter 21 - : Chapter 20, Grade 5

Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”

The marriage between the Mu Clan and the Gu Clan had been going on for seventeen years, but unexpectedly, the Gu Clan's Second Brother had suddenly encountered a car accident five years ago.

In order to prevent his beloved granddaughter from being wronged in the past, the Mu family directly chose to have their younger sister replace them.

He didn't expect that after the Mu family's unfavoured granddaughter got married, she would be doted on. No matter what event she participated in, as long as she had him as the second young master's daughter, she would definitely follow his sweet little wife.

Before death Qin Tailong left two magic tools to his son, Qin Dong. In his father’s last words, Qin Dong realized his father had been murdered by Lord Wanpeng, who coveted one of the family magic tools—mystic chaos ring. Bearing the hatred in mind, Qin Dong swore to revenge against his foe. He escaped to the mortal realm temporarily, continued to strengthen his cultivation base and studied the secret hidden in the seals of the ring. While reveling the secret, he found five ladies were the key to the release the seals. Their romantic relationship with Qin Dong was established the moment he was born.

- Description from Novelupdates

MC (female protagonist) dies in a plane crash and wakes up in the body of a beautiful but corrupt and lascivious prime minister in ancient times, Zhang Qinglian. As circumstances decree, he (she) cannot reveal that the original owner’s soul is gone else calamity might occur. So he (she) decides to walk a righteous path, determined to help the lovely but simple little emperor rule the country. Not backing down after facing torture, not losing courage, destroying rebellions and facing off with scheming princes.