Kami-sama no Memochou - Volume 9, Chapter 2

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.

Grandpa Yu often repeated beside the ear of Yu Zhen, saying that he(YZ) has a soul in his body. If he doesn’t properly train in asceticism, and raise then send away the powerful soul, in this lifetime he would have to live as a bachelor. In his next lifetime he would be reborn as a lifestock animal.

Yu Zhen played on his mobile and nodded. On the surface he replied, “Uh-huh”. In his heart he laughed, “hahaha”. Keeping his grandfather in the dark was amusing so the lie was repeated for over ten years without Yu Zhen getting tired of it.

After some years, Grandpa Yu passed away and a cold-faced handsome guy came to his door in a luxury car – with a household register in his hands.

…..

Yu Zhen: The soul in my body reincarnated into someone else’s body to demand repayment, what should I do!

- Description from Novelupdates

Humanity has been gradually transported to the Abyss by a bored god to compete against other races and monsters.The problem is… humanity failed. In a last desperate push the strongest survivors chose a comrade to travel as far as possible back in time.

Su Mian, the forgotten bride, has endured three years as ​Fu Tingzhou’s invisible wife—a man so coldly abstinent, he never even glanced at her. Branded a “murderer’s daughter,” she’s spent her life as a human blood bank for the Su family’s pampered heiress, her true worth buried beneath lies.When Tingzhou finally meets his timid wife, he sees only a gold-digging burden. Her quiet devotion? Ignored. Her shattered heart? Dismissed. He hurls divorce papers at her, snarling, “Disappear.”She obeys… and unravels his icy control.Now, the untouchable CEO is on his knees.Her absence ignites a frenzied, scorching obsession. Fu Tingzhou hunts for the wife he never wanted—only to discover her vanishing act hides earth-shattering secrets: ​switched identities, a hidden lineage, and a woman who’s no longer the meek shadow he discarded.