Harry Potter: Ero World - Chapter 11: Most Ancient and Most Noble House of Greengrass!

One day, Emperor Wu Ling discovered, every night he would become a stone, kept on the jewellery box of a lady, embarrassing beyond embarrassing.

One day, Zhao Jin Yu discovered, the stone on her jewellery box could actually speak! Awkward beyond awkward.

This stone had a malicious tongue, harsh, two-faced and indifferent, Zhao Jin Yu itched to throw it smashing it to pieces…, who knew one day, wanting to save herself she used it to block a sword, it really did shatter, she cried for a very long time.

Again one day, Zhao Jin Yu was drafted into the palace, she discovered unusually, the emperor was like this he had a malicious tongue, harsh, two-faced and indifferent…

- Description from Novelupdates

The summer I was 17. A painting I created was sold. For 1.4 billion won.

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. Haruka’s beauty and charm made her the center of attention, quickly becoming the school’s prima donna. But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically. Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible. This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

The countries of Mephius and Garbera have been waging a war for ten years and are trying to put an end to this long fight through a political marriage between the two royal families. Orba, who was driven from his home because of the war and was forced to become a gladiator, looks exactly like the crown prince of Mephius, and it has been decided he will be substituting him during the wedding ceremony. On the other hand, Vileena, the princess of Garbera, has secretly decided to ensnare the crown prince for her own country’s interests.