Harry Potter: Ero World - Chapter 84: Runic System!

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

The more ruthless the Palace is, the more miserable the loser will end up—this he understands. But what he does not understand is, why the brother whom he lived together with peacefully in the past, would so heartlessly humiliate him today. Asking him to beg for mercy, asking him to succumb to his knees, and even… asking him to tactfully entertain him. “Yong Shan, ah, Yong Shan, as of today you are the one who qualifies to succeed as a Crown Prince, what exactly is it that you want?”

For the past 16 years, Yong Qi’s gaze was never set on him. Despite being twins with his younger brother, Yong Lin, Yong Qi has always been directing his smile and laughter towards Yong Lin, and to him, Yong Qi deliberately alienates him. He does not understand, they have the same features and looks, and he obviously is his brother too, but why won’t he be intimate with him… as if he is humiliating him. “Yong Qi, ah, Yong Qi, why won’t you understand, what I want is very simple…”

- Description from Novelupdates

The Jiang family, a wealthy family in Jincheng, adopted a pair of sisters. The younger sister Jiang Fanyue is sensible and generous, with both talent and beauty.

The impoverished biological family came to the door, and the Jiang family couldn’t wait to pack Jiang Zhe away, leaving Jiang Fanyue behind; family property, reputation, the identity of the eldest daughter, and fiancé, all have nothing to do with Jiang Zhe from now on.

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Jiang Zhe stepped into the door of his house with suspicious eyes. Are the precious famous paintings of the Tang Dynasty hanging on the wall authentic? Is the bowl that holds vegetables and soup an orphan made of gold wire enamel?

What about poor families?

What, there is also a fiancé of the top wealthy family in the capital?

Can she break off the marriage?

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The boss blocked her against the wall and wrapped her in his arms: “What do you think, Madam?”

“My grades are so bad that I fail all of them, and I don’t deserve to be in a giant.”

The boss turned out her full-scale college entrance examination paper.

“I’m nothing, nothing.”

The big guy lifts off her magic doctor, designer, hacker, composer… and other small vests.

He was small and gentle: “I work hard to be worthy of the lady.”

[I have no desire or desire since I was a child, but when I saw you for the first time, I prayed to the gods and Buddha for a moment, I want to beg you – Qin Jingchen. 】

- Description from novelbuddy

A world-famous hacker and daughter of the most powerful criminal family who ruled the international underworld for many generations is killed when their organization is annihilated in a single night.