His Contractual Mistress - Chapter 500 Take Over His Body

A girl who calls herself a demon appeared before a timid student named Fumio Kijima. The girl claims to be a campaign girl from the demon world and she gives him the ability to “summon a room” from nothing but thin air.

At first he doesn’t abuse his power and uses it as a convenient ability in his every day life. But one day he is bullied by his classmates under a false pretext and is made to suffer. In the past he would have wallowed in misery and cried himself to sleep, but now he had a power to call upon.

“I will make them regret it!”

Using his powers to summon his “room”, he begins his era of confinement and brainwashing to achieve his goals.

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

War correspondent Chen Xuan accidentally traverses to a Martial Arts World,becoming a hunter.In his home, besides him, there are two women, the beautiful sister-in-law Su Wanqiu and her pure sister Su Yun.Under the matchmaking of Wanqiu, Chen Xuan marries the pure Su Yun.Unexpectedly,after the wedding night,a strange piece of information suddenly appears.Chen Xuan:.....His expression is somewhat peculiar!Why does this system seem somewhat improper!So....with the improper system, and the improper him, they push through the Martial Dao, and reach her!