MTL - Rebirth Married The Control Group Fulang - Chapter 5

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

Zhao Du'an, a government official leading a cautious life, finds himself transported to another world where he becomes the favored 'pretty face' of a female emperor and an oppressive, power-abusing villain. Before he can relish the moment, he faces mortal danger for releasing a national criminal. Cornered and desperate, he plans to soothe the female emperor to seek mercy, only to discover his 'leading gigolo' role is a sham.Worse still, his notorious reputation prompts officials and heroes alike to impeach and eliminate him; and martial artists and clerical magicians consider him a disgrace. Overwhelmed, Zhao Du'an decides it's better to stop being human to survive.Starting by betraying his allies, he becomes the Emperor's top lackey. Years later, amidst heavy snowfall in the capital, the female emperor Xu Zhen Guan sighs atop the city tower, 'It was supposed to be a pretend companionship, how did it turn real...'Also known as 'Deceiving and Flattering at the Court of Great Yu', 'The Record of a Villain Going White'.

“What?! I turn into a little cat… at the end of the world?”

Kate looked at her small limbs with desperation. She glanced at the others who awakened strange and powerful abilities while she turned into a small cat without any combat ability.

She wanted to cry.

Thankfully, this small cat has an owner. Her strict professor who looked cold and unfeeling.

With no other choice, Kate can only follow him.

…

Kyle looked at the little cat in his arm who showed an innocent look.

Have you ever seen a cat acting coquettish after stealing food to hide her guilt?

Have you ever seen a cat take a bath so happily?

Have you ever seen a cat… turning into a little kid?

.....

Looking at the cat eared little girl with cute tail, Kyle sighed and decided to become the girl’s father and taught her the way of the world.

But when cat eared little girl suddenly grew up into an adult… Kyle fell silent.