MTL - Honkai Q&A, Starting with Kiana - Chapter 269

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

At the beginning, travel to the Holy Land Mary Joa and become a slave of the dragon people.

With the help of the Tianlong people’s “enthusiasm”, Chenos obtained the Devil Fruit that can rebound everything, won the favor of the Empress, learned to be domineering, and also gained the Golden Emperor as his younger brother.

Finally, in order to thank the Tianlong people for their “enthusiasm”, Chenos, who became the five emperors, decided to let them leave the Holy Land Mary Joa and experience the fun of the world!

[No system, no golden fingers, take the road of developing fruits, practicing physical skills and domineering, hoping to bring you a different world of pirates. ]

- Description from novelbuddy

[Mature Content]
'He was sin. A sin she was not supposed to commit to.'
—

The body of a mermaid is a vault of treasures. Their tears formed the most splendid of pearls, their exquisite blood a euphoric drug for vampires, their luscious hair woven into the finest of silk, and their tender meat sought after by werewolves more than Heaven’s ambrosia.

The creatures of night mingled within human society, fleeced in the wool of aristocracy, veiled in their portrayed innocence and nobility, their savagery continued to predate on the weak and powerless.

Genevieve Barlow, Eve for short, was an exceptionally strange young lady. She had an alluring and beguiling nature, where for her twenty-four year old self had barely changed in appearance since her eighteenth birthday. She had fooled the administration and had gotten a degree so that she could have a better life.

Most odd of all was that Eve had a secret she shared with no one.

She enters the house of Moriarty, not just to earn but also to find answers on what happened to her mother nearly two decades ago.

Unfortunately, things do not always proceed as one planned. Despite her cautious nature and desire to stay out of sight, a cold pair of eyes falls on her, that soon refuses to leave her out of sight.