I Transmigrated into a Book and Became the Real Rich Daughter's Pampered Cousin - Chapter 468 - : Accountable

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

Version 1:

Jiang Mianmian time traveled.

Her father had an insidious scholar’s face but a sinister heart.

Her mother had a merciful bodhisattva’s face but a vicious mind.

Her elder brother looked honest but was evil inside.

Her second sister was selfish and foul-mouthed.

They were destined to be villains from birth, to contrast the protagonist’s righteousness, kindness and greatness. They did all kinds of bad things, were covered in filth, fell into an abyss, and came to no good end.

Jiang Mianmian – With the magical spring in hand, weak and timid, she could only let her family live a bit longer…

Version 2:

In her previous life, Mianmian’s family died out early.

In this life:

She married the most popular duke.

She became sworn sisters with the rebel leader.

Ungrateful and unfilial.

Disloyal and unrighteous.

No integrity.

But they all lived, with the family intact.

…

Version 3

Reader’s summary: Father is Medusa, mother is polar bear, brother is evil wolf, sister is coyote, heroine is panda, moving mountains and overwhelming the world, only selling cuteness.

Only a pure maiden can have a privilege to make contract with a spirit.

In Areishia Acadamy, maidens from noble family were gathered there, giving them an elite education to become a spirit contractor. A boy Kamito, by accident he peeped on a girl, Clair, who was taking a bath, and he even made a contract with spirit that she wanted.

Kamito was actually an irregular male spirit contractor, which should not exist.