Tate no Yuusha no Nariagari - Chapter 30 - Transformation Ability

With the Heavenly Medical Skills and Peerless Martial Arts under his belt, his master had made him descend the mountain to become a live-in son-in-law, all to temper his character! And his wife was an ice queen, who wouldn't even let him touch her, always wearing a cold expression and even expecting him to fetch water for her footbaths!Now, three years had gone by, and the agreed period had come to an end. Surprisingly, the ice queen of a wife decisively asked for a divorce. But the moment he stepped out of the civil affairs office, he found six stunning beauties standing at the door, whose loveliness made even her feel inferior!The ice queen of a wife, “President Su! You, why are you here?”His senior sister, Su Yumei, “I'm here to pick up my little junior brother! Your former husband!”

Xueyue's life was filled with nothing but unfortunate events. Her mother died giving birth to her, her father abandoned her for another family, her stepsister stole her beloved, and she was framed for a murder she didn't commit.
Sentenced to death by beating, Xueyue thought her horrible life would finally end.

Three hundred years since the founding of the Great Jin Dynasty, the fortune of the country has been prosperous. In the imperial court, there are great Confucianists who make their promises.

Zuo Daoqi traveled to this world and became a little eunuch who was about to be thrown into the cold palace.

The court was treacherous, and the rivers and rivers were vicious. He just wanted to live on honestly.

But accidentally opened the script of life, can see through other people’s future scripts, and can get rewards after completing tasks.

The first thing that caught my eye was a little loli who was about to become an empress…

From then on, Zuo Daoqi planned to stay in the cold palace, study the game script well, and train the future empress by the way.

In my spare time, I’ll talk to the queen mother, imperial concubine, princess and so on.

His original purpose was to protect himself, so that he could leave the palace as soon as possible and become a rich man.

…

Until one day, a little eunuch came to Zuo Daoqi’s side,

“Nine thousand years old, the empress dowager said it’s time to serve her tonight.”

- Description from novelbuddy

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?