Immortal and Martial Supreme Master - Volume 1 Chapter 1715 Primordial Divine Thunder King

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.

Your meridians cannot be cultivated? It’s ok! There are Crazy Leveling System, do missions, kill monsters, swallow other people’s spiritual power, make pills or forge weapon, participate in big battle, you can gain experience!

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

- Description from Novelupdates

After crossing into the world of Harry Potter as Ron's twin brother, Hoare Weasley awakens the “Pay-to-Win System,” which allows him to grow stronger as long as he has Galleons.Others rely on hard work to study; Hoare relies on Galleons.Others depend on wit to learn; Hoare depends on Galleons.Others rely on talent to improve; Hoare still depends on Galleons!As long as he's willing to pay, he can take down Malfoys, Blacks, Lestranges—anyone! With enough money, he could even take a swing at Dumbledore himself.Thus, the title of “money-obsessed lunatic” quietly rises within Hogwarts.You-Know-Who: “I hear your magic is impressive. I want you to kill someone for me.”Hoare: “One hundred Galleons.”You-Know-Who: ...