The dragon's harem - Chapter 758 Arad’s Terrifying Creation.

Civilization is destroyed and records lost. Only Dudian survives in a cryogenic sleep. Three hundred years later, Dudian wakes up and must become Dean to survive. Who can he trust in this world overrun by monsters without and within?

- Description from Novelupdates

Sam unexpectedly acquired a dating simulation game named “The Female leads Truly Loves You”. He was quickly captivated by the game, which featured numerous beautiful female leads.Crucially, it was a harem-style game where the mc could maintain romantic relationships with various female leads and engage in sexual relations with them.Just when Sam thought achieving sexual relationships with these female leads was the game's goal, the ending shocked him profoundly.When all the female leads discovered the male protagonist's love for multiple girls, they exhibited inexplicably insane behavior.True to the game's title, “The Female Leads Truly Loves You”, each one wanted to possess the male lead exclusively. The crazed female leads resorted to extreme measures, killing the male protagonist.They dismembered his body and preserved it in formalin.They decapitated him and kept his head by their pillows to accompany them in sleep forever.They drained his blood to create a specimen, ensuring they could see their beloved male lead every morning....Realizing his fate would be death, Sam chose to avoid these female leads. However, they seemed to possess magical abilities, always finding him using various means.Fortunately, Sam had a system. By thoroughly conquering these female leads, he could avoid the deadly ending and even gain enhanced abilities.

Procrastinator extraordinaire, Fang Ning, had lost his consciousness after banging his head on a night of celebration. He woke up to a realization that he no longer had control of his body, as a System had taken it over. Will he eventually regain control of his body or will he be trapped in his body forever? How does he maneuver this situation? What’s in store for Fang Ning?

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.