A Hentai System in the World of Danmachi - Chapter 2 - 1 - Hestia.

When the last prodigy level esper on Earth disappeared, Earth was in deep trouble of becoming another species’ colony. The ordinary Han, with his intelligence and hardworking character, was able to make a fortune after “accidentally” stepping into the world of dark net, later purchasing an esper power crystal that brought him the ultimate power that changed the fate of the universe.

Wei Yuewu is the unloved daughter of the powerful Marquis Hua Yang.

On her way back to the capital city to marry her fiancé, she becomes the target of a ruthless assassination led by her fiancé, Marquis Jing Yuan.

With the help of the Prince of Yan State, she narrowly escapes from one disaster after another and returns to the capital.

Determined to avenge her enemies and unravel the mystery surrounding her engagement with Marquis Jing Yuan as well as the death of her mother, Wei Yuewu makes a deal with the Prince of Yan State.

However, just as she has triumphed over all her enemies and is about to reach the acme of her life, she deliberately destroys her own future and becomes an exile of her own…

Summoned by a beautiful woman to a different world, Yamai Zenjirou is asked to marry her and make a child with her. Will he throw his life on earth away for a sponger life with a beautiful woman?

Monsters lurk in the night, but what if something else hunted them? An incident in his childhood left Velik an outcast with a racial subtype that thrives at night and unique class called [The Black Fang], which focuses on just one thing: killing monsters. He’s good at finding them, and he’s good at slaying them. For ten years, he’s been gaining levels and sharpening his skills on the thousands of monsters infesting the wild lands of the frontier. For ten years, he’s kept a lonely stretch of towns safe. Despite his efforts, this year has seen an explosion in the monster population, so much that he’s no longer capable of protecting everyone by himself. This draws the interest of another monster hunter, one that’s professionally licensed, but he seems more interested in investigating Velik than anything else. At least with him there, Velik is free to finally explore the mysteries of the deep wood, where he believes the source of all monsters resides. Every answer he finds leads to new questions, and not even Velik himself knows the truth of what happened on that fateful day. One thing’s for sure: not even the monsters are safe in the dark.